While other classes have been getting some insane changes (no more consumable ammo for Hunter? Huh?), the Mage class was left with little information.
The only major change that really came out in the last day was that there will be a replenishment like talent added, taking the place of Improved Water Elemental. The overall effect will be similar to what Shadow Priests do with their mana regen.
Some of the other things, which we are assuming have been intentionally left vague, include changes to make spirit a more "useful and interesting" statistic for Mages, and increasing a Fire Mage's survivability. There is also a blurb about giving Frost Mages an Ice Lance "Shatter Combo" in PvE encounters.
So if you're like everyone else and scratching your head, asking where are all the more detailed changes... don't panic! We're sure there's a ton more to come.
Patch 3.1 brings us Ulduar, dual specs, significant changes to all the classes, and more! We've got you covered from top to bottom with our Guide to Patch 3.1.