Mage changes have been finally announced here is the direct link http://blue.mmo-champion.com/t/24262357286/cataclysm-class-preview-mage/ and blue post is below.
In World of Warcraft: Cataclysm, we’ll be making lots of changes and additions to class talents and abilities across the board. In this preview, you’ll get an early look at what’s in store for the mage class, [...]