I have some clarifications for this on some of the class specific information just as an FYI :)
Gorefiend's Grasp? Back up a minute here.. First ehy get howling blast to nuke the living undead back to where they came from in the first place as an insane AoE attack and now they're getting
a somewhat priest spell? Come on, guys, this is just wrong!
Gorefiend's Grasp is not going to be similar to the priest spell, it is actually a spell that will pull all enemies in within a set radius to the location of the targeted mob or player. The base spell itself can be targeted on a player, but the pull effect will not affect friendlies.
Frost not being survivability anymore? Can it really be that my ol' OP days as a frost mage in Ony 40-man is coming back?
The talent trees now require that you must trade the survivability talents you got in the frost tree, for some of the higher damage output of the other trees for PvE which is why Frost damage output was lower. The new talent tree in Mists of Pandaria will let you take the utility and survival talents from there. The major difference that you will have as a Mage between all 3 specs is the spells you cast as well as the procs and other mechanics that activate.
Whoa! Back up here for a minute. What youse are telling me is that holy priests can no longer use Holy Nova? Holy priest = Holy Nova..... 'Nuff said.
If you like, we may consider changing it to Discipline Nova to keep it linked in with the talent tree that uses it? :p
Dibs to Jito for beating me to the Glyphs and ranged weapons point. ^^