Okay so mage talents got improved a LOT now.
http://www.mmo-champion.com/talent/?mageHighlights:
Imp Scorch now affects fire, frost and arcane damage
Brain Freeze gives frost damage spells a 15% chance to give instant mana free fireballs
Deep Freeze now does damage
Ice Barrier can now be talented to frost nova when it breaks like Shatter Shield
Winter's Grasp actually got nerfed into Fingers of Frost but it does much the same thing
They changed Living Bomb but I can't really tell if it's good or not yet..
Firestarter gives you a chance of instant flamestrikes on other aoes
NO MORE WAND SPECIALISATION, nice talent called Focus Magic in its place
Imp water elemental also heals your raid.
Spell Impact now increases damage done rather than crit chance
they unnerfed ice lance being unaffected by Arctic Reach
firey payback reduces damage taken when below 35% and makes pyroblast a 1.5 second cast (wouldn't low ranks be instant? :o)
Burnout is now not utterly terrible.
Prismatic cloak now makes invisibility an INSTANT fade out
I am really liking these changes a lot.