World of Warcraft: Cataclysm will bring with it several changes to class talents and abilities. In this preview, you’ll get a glimpse at some of the new abilities, spells, and talents in store for the death knight class, along with an early look at some improvements we plan to make to the rune resource system.

New Death Knight Abilities

Outbreak (level 81): Outbreak infects the target with both Frost Fever and Blood Plague at no rune cost. This ability allows death knights to apply diseases quickly when they are switching targets or when their diseases have been dispelled.

Necrotic Strike (level 83): Necrotic Strike is a new attack that deals weapon damage and applies a debuff that absorbs an amount of healing based on the damage done. For context, imagine that the death knight can choose between doing 8,000 damage outright with a certain ability, or dealing 6,000 damage and absorbing 4,000 points in incoming heals with Necrotic Strike — the burst is smaller, but a larger overall amount of healing would be required to bring the target back to full health.

This ability is meant to bring back some of the old flavor from when death knights could dispel heal-over-time (HoT) effects. It also gives the class a bit more PvP utility without simply replicating a Mortal Strike-style effect.

Dark Simulacrum (level 85): The death knight strikes a target, applying a debuff that allows the death knight to copy the opponent’s next spell cast and unleash it. Unlike Spell Reflection, Dark Simulacrum does not cancel the incoming spell. In general, if you can’t reflect an ability, you won’t be able to copy it either.

Rune System Changes

While we’re satisfied with the way the rune system works overall, we’re making a few major changes to the mechanics that will ultimately help death knight players feel less constrained. Here’s the rationale behind the changes, followed by an explanation of how the new system will work.

• In the current rune system, any time a rune is sitting idle, death knights are losing out on potential damage output. By comparison, rogues spend most of their time at low energy levels, and if they’re unable to use their skills for a few seconds, that energy builds up and can be spent later, minimizing the net loss from the interruption.
• A death knight’s runes, on the other hand, cannot be used until they are fully active. If a death knight ever goes more than a few seconds without spending an available rune, that resource is essentially wasted. Because the death knight is pushing buttons constantly, it can be difficult to add new mechanics to the class because the player doesn’t have any free global cooldowns to use them. We can’t grant extra resources or reduced cost, because there is no time to spend them. Missing an attack is devastating, and it’s impossible to save resources for when they’re most useful.
• Additionally, each individual death knight ability has a fairly low impact on its own, making it feel like most of the death knight’s attacks are weak. The death knight’s rotations are also more easily affected by latency or a player’s timing being just a little off. At times, it feels like death knights aren’t able to take advantage of their unique resource mechanic, which can diminish the fun.
• The new rune system will change how runes regenerate, from filling simultaneously to filling sequentially. For example, if you use two Blood runes, then the first rune will fill up before the second one starts to fill up. Essentially, you have three sets of runes filling every 10 seconds instead of six individual runes filling every 10 seconds. (Haste will cause runes to fill faster.) Another way to think of this is having three runes that go up to 200% each (allowing extra “storage”), rather than six runes that go up to 100% each.
• As this is a major change to the death knight’s mechanics, it will of course require us to retune many of the class’s current abilities. For example, each ability needs to hit harder or otherwise be more meaningful since the death knight is getting fewer resources per unit of time. Some abilities will need to have their costs reduced as a result.

Talent Changes

Next we’ll outline some of the death knight talent-tree changes we’re planning in Cataclysm. This list is by no means comprehensive, but it should give you a sense of how we’re intending each death knight spec to perform.

• One of the biggest changes we’re making is converting Blood into a dedicated tanking tree. While we feel that having three tanking trees was successful overall, it’s less necessary in a world with dual-specialization. In addition, the current breakdown isn’t as compatible with the Mastery-based passive talent-tree bonuses we want to add (see below). We’d rather spend time tweaking and balancing one good tanking tree rather than having a tank always wondering if they picked the “correct” tree out of three possibilities.
• Blood seemed like the best fit for tanking. Unholy has always had a strong niche with diseases, magic, and command over pets. Frost now feels like a solid dual-wield tree with Frost magic damage and decent crowd control. Blood’s niche was self-healing — fitting for a tank — as well as strong weapon swings, which could easily be migrated to Frost and Unholy.
• Our plan is to move the most interesting and fun tanking talents and abilities to Blood. For example, you will likely see Vampiric Blood and Will of the Necropolis remain, while Bone Shield will move over from Unholy.

Mastery Passive Talent Tree Bonuses

Blood

• Damage reduction
• Vengeance
• Healing Absorption

Healing Absorption: When you heal yourself, you’ll receive an additional effect that absorbs incoming damage.

Vengeance: This new mechanic is designed to ensure that tank damage output (and therefore threat) doesn’t fall behind as damage-dealing classes improve their gear during the course of the expansion. All tanking specs will have Vengeance as their second talent tree passive bonus. Whenever a tank gets hit, Vengeance will grant a stacking Attack Power buff equal to 5% of the damage done, up to a maximum of 10% of the character’s unbuffed health. For boss encounters, we expect that tanks will always have an Attack Power bonus equal to 10% of their health. The 5% and 10% bonuses assume 51 talent points have been put into the Blood tree; these values will be smaller at lower levels.

You only get the Vengeance bonus if you have spent the most talent points in the Blood tree, so you won’t see Frost or Unholy death knights running around with it. Vengeance will let us continue to design tank gear more or less the way we do today; there will be some damage-dealing stats, but mostly survival-oriented stats. Druids typically have more damage-dealing stats even on their tanking gear, so their Vengeance benefit may be smaller, but the goal is that all four tanks will do about the same damage when tanking.

Frost

• Melee damage
• Melee Haste
• Runic Power Generation

Runic Power Generation: This will function as the name implies, and the new rune system will make generating Runic Power more appealing.

Unholy

• Melee damage
• Melee and spell critical damage
• Disease Damage

Disease Damage: Unholy death knights will be able to get more out of their diseases, which are integral to the tree’s play style.

We hope you enjoyed this preview, and we’re looking forward to hearing your thoughts and feedback on these additions and changes. Please keep in mind that this information represents a work in progress and is subject to change as development on Cataclysm continues.

[...]

Here are a few points of clarification:

• We want to provide a 2-handed style for Frost since we recognize that pets are an acquired taste. We think we have the design space to do that now that we don’t need to support Frost tanking. We’re definitely committed to making Frost work as a dual-wield tree though — that isn’t going away.
• Outbreak is free with a 1-minute cooldown. It’s not supposed to completely replace Plague Strike and Icy Touch.
• We’re not sure how we’re going to handle presences yet. We recognize the oddness of Blood death knights playing in Frost Presence and Frost death knights not playing in Frost Presences. We might rename the presences or take some other action.

As many of you know from panels at last year’s BlizzCon and posts here on the forums since then, Cataclysm will bring about major changes to familiar character stats such as Intellect, Armor Penetration, Defense, and others, ultimately designed to make the effects of stats more easily understandable and make gear choices more interesting. As these changes will have a significant impact on how stats work and relate to one another, today we wanted to offer you a closer look at exactly what’s in store and explain some of the rationale before Cataclysm arrives.

The most obvious question these changes raise is “Why are stats being changed, and why now?” As the game has matured, we’ve run into increasingly complex issues with the current stat system. Many stats are inherently confusing, and the way they interrelate can feel convoluted. Attack Power, for example, currently translates to damage, but so does Armor Penetration. Defense provides five different statistical benefits of varying utility. Mana regeneration involves understanding multiple stats and rules and often ends up being irrelevant anyway. In addition, the difference between a “good stat” for a class and a “bad stat” can be extreme. Some casters want Haste but not Crit; hunters want Armor Penetration but not Haste. There are other overarching issues, as well, such as Intellect not being very exciting for casters despite it being a core stat — and these are just a few examples.

Our ultimate goal is make gear a more interesting (and less confusing) choice by making each stat valuable to more players. While the reasoning behind some of the following changes may be clear, we understand that you may have questions about some of the less obvious alterations, and we’ll do our best to answer any questions you may have here on the forums.

What You’ll See on Gear

Stamina – Because of the way we will be assigning Strength, Agility, and Intellect, non-plate wearers will end up with more Stamina than before. Health pools will be much closer between plate-wearers and other classes.

Spirit – Come Cataclysm, this stat should only be found on healing gear. Non-healing casters will have other systems in place to regenerate mana, and we are designing special solutions for Elemental shaman and Balance druids who often share gear with healers (more on this below). Raid buffs that currently boost Spirit (such as Blessing of Kings) will only boost the primary stats of Stamina, Strength, Agility, and Intellect. We are also likely changing the five-second rule and other quirks of the current regen system.

Intellect – Intellect will now grant Spell Power (more on this below). Intellect will also provide less mana than it currently does.

Haste – Haste will become more attractive for melee classes by allowing them to recover resources such as energy and runes more quickly. Our intention is for Haste to let you “do stuff” more often.

Block Rating – Block is being redesigned to scale better. Blocked attacks will simply hit for 30% less damage. Block rating will improve your chance to block, though overall block chances will be lower than they are today.

Parry – Parry no longer provides 100% avoidance and no longer speeds up attacks. Instead, when you parry an attack, it and the next attack will each hit for 50% damage (assuming they hit at all). In other words, Dodge is a chance to avoid 100% of the damage from one attack, Parry is a chance to avoid 50% of the damage from two attacks, and Block is a chance to avoid 30% of the damage from one attack.

Mastery – This is a new stat that will allow players to become better at whatever makes their chosen talent tree cool or unique. It’s directly tied to talents, so what you gain from improving this stat is entirely dependent upon your class and the talent specialization you choose. We’ll talk more about specific Mastery benefits in the future.

Armor – The way Armor mitigates damage is not changing, but the Armor stat has been rebalanced to mirror changes to the armor curve in Cataclysm. As a result, bonus Armor will go down slightly overall. We are also changing the mitigation difference among armor types so that plate doesn’t offer so much more protection than mail, leather, and cloth.

Resilience – This will only affect damage done by players and critical damage done by players. It will not impact crit chance, mana drains, or other such effects.

Strength, Agility, Hit Rating, Expertise, and Critical Strike Rating – These will all still appear on gear as well. Aside from situations mentioned elsewhere in this list, in general these will function similarly to how they do now, though the details — such as how much Hit Rating you might need to effectively combat high-level creatures (more on this below) — are likely to change.

Being Removed from Items

Attack Power – This stat will no longer be present on most items as a flat value, though it will still show up on some process. Strength and Agility, which will be present on items, will grant the appropriate amount of Attack Power (generally 2 Attack Power per point of Strength or Agility) depending upon which stat a particular class favors. Agility may provide less Crit than it currently does.

Spell Power – Spell Power is another stat that you’ll no longer see present on most items. Instead, as mentioned above, Intellect will grant Spell Power. One exception is that caster weapons will still have Spell Power. This allows us to make weapons proportionately more powerful for casters in the same way they are for melee classes.

Armor Penetration – This stat will no longer be present on items. Armor Penetration will still exist in talents and abilities.

Shield Block Value - This stat will no longer be present on items, since the amount blocked is always proportional to the amount of damage done. Talents and other effects might still modify the damage-reduction percentage from 30%, however.

Going Away Completely

MP5 – This stat will be removed from the game completely. Holy paladins and Restoration shaman will be redesigned to benefit from Spirit.

Defense – Defense is being removed from the game entirely. Tanking classes should expect to become uncrittable versus creatures just by shifting into Defensive Stance, Frost Presence, Bear Form, or by using Righteous Fury.

Spell Ranks – Spell ranks will cease to exist. All spells will have one rank and will scale appropriately with level. The levels at which you can learn certain spells are being changed in order to fill in some of the gaps, and we will be introducing some new spells to learn along the way as well.

Weapon Skill – This stat will be removed from the game completely. Classes will start with all the weapon skills they need to know and will not need to improve them.

What Else You Should Know

Combat ratings – All ratings will be much harder to “cap out” at maximum gear levels. Ratings will be steeper in Cataclysm, and creatures in later tiers of content will be harder to hit or crit, similar to how level-83 mobs are harder to hit or crit than level-80 mobs.

Reforging – While these changes will go a long way to making a wider variety of stats more attractive, we understand that sometimes you simply don’t want more Hit Rating on your gear or you’d rather have more Haste than more Crit. In Cataclysm, we are going to give players a way to replace stats on gear as part of the existing profession system. As a general rule of thumb, you’ll be able to convert one stat to 50% of another stat. While some conversions (like converting Stamina to Strength) won’t be permitted, the goal is to let you customize your gear more.

Gems – We are changing the gem colors of a few stats as a result of these adjustments. For example, Hit is likely to be blue instead of yellow. We’ll have more details on this in the future.

http://forums.worldofwarcraft.com/thread.html?topicId=23766991571&sid=1

We’re currently working on the tanking cooldowns for tanks in Cataclysm. We’re interested in feedback from the community on what makes cooldowns fun and useful. For example, what is the sweet spot in cooldown duration between an ability with such a short cooldown that you must mash it constantly versus an ability with such a long cooldown? Which current abilities are fun? Putting aside any rose-colored glasses, were there cooldowns in Burning Crusade or classic WoW that you miss in Lich King? What, in your minds, should the role be for talents and glyphs. For example, if glyphs shouldn’t reduce cooldowns, what can they do?

We’re less interested for purposes of this specific discussion on class balance. Let’s try to keep the “who is overpowered?” discussions out of this thread. We want to focus on fun and useful with an eye towards the future.

We intend to use this feedback to help make informed decisions when designing Cataclysm talents and abilities, but this is no guarantee that we will be implementing all suggestions or any particular suggestions from this thread. This is merely one of many tools that we plan to use for making the best possible decisions about continuing development.

Thank you for your feedback.

WoW Cataclysm Mage Changes Info

• Mages will no longer want spirit as it is now primarily a healer stat, intellect will now give spell power and this will become even more of an important stat than before
• There are plans to make Combustion more interesting for Mages in Wow Cataclysm
• Mage abilities and spell in Wow Cataclysm will be changed to account for the loss of Spirit. Example: Molten Spirit
• Night Elf Mages in WoW Cataclysm will be those Night Elfs that have been messing around with the Arcane when they shouldn’t have, thats the explanation they have given anyways.

WoW Cataclysm Paladin Changes Info

• Tauren Paladin would look very strange in an Armored Charger, and so Blizzard will have a new mount for them…a Holy Cow? Ok sorry that joke is getting old already.
• There is no plans to prevent Paladins from picking up cloth items
• Retribution Paladin in WoW Cataclysm will able to benefit from the new haste rating (increase rate of regeneration of runic power/focus/energy) 

WoW Cataclysm Priest Changes Info

• Shadow Priests in WoW Cataclysm will get a nuke without a cooldown
• Some Changes that might affect Priest’s spots in Raids,Groups: Shaman getting better AoE healing, all healing classes getting dispell magic and meditation like ability

WoW Cataclysm Death Knight Changes Info

• Blizzard feels like the Death Knight class is fine as it is right now. With all the special treatment they got last expansion, I wouldn’t expect too many changes for Death Knights in the WoW Cataclysm expansion.

This year around Blizzard decided not to have a seperate slide for each class at Blizzcon, and therefore we’re forced to just wait and see until the Cataclysm Beta is released. I wouldn’t take the lack of annoucements for Deathknights, Paladins, Mages, and Priests in WoW Cataclysm as a sign that Blizzard doesn’t have big plans for you. It could be the case that the changes are so big that they aren’t ready to announce them yet or haven’t been totally confirmed. This is what happens when we have WoW forums that react and whine to every little promise that Blizzard makes, they now have stopped announcing changes unless they are 110% certain. Anyways, so stay tuned dear Priest, Mage, Death Knight, and Paladin, for real changes in WoW Cataclysm will come in the near future.