Warlords of Draenor officially landed on Nov. 13, 2014 and is now up to patch 6.1.2.
The idea behind the changes is generally this: Bliz feels that button bloat (too many abilities on the action bars) has gotten unmanageable for most, so is working to trim that. What that means for your Mage is that some abilities are going away and other are changing in one way or another.
Also, Crowd Control has gotten a bit out of hand, in their view. Some of the various changes being made will reflect that view.
Will your Mage still be recognizable? Yes, just a bit streamlines. Read on and tell us what you think.