I'm reading it right now trying to find some differences or some interesting things...
Resilience: Now reduces the magnitude of mana draining effects by the same amount that it reduces critical strike damage. The Tooltip has been revised to reflect this
Paladin:
Turn Undead(Rank 3):This spell has been reworked and has been renamed to ?Turn Evil?. It will now work on Demons in addition to Undead. Turn Evil is subject to diminishing returns, and lasts 10 seconds in PvP.
Holy Shock: The healing, damage, and mana cost of this spell have all been increased.
Priest:
Chastise no longer disorients the target, but now is instant cast and roots the target for 2 seconds.
Power Infusion: Infuses the target with power, increasing their spell haste by 20% for 15 seconds.
Reflective Shield: The reactive damage from this talent no longer breaks crowd control affects which break on taking damage.
Rogues:
# Improved Backstab is now called Puncturing Wounds.
# Puncturing Wounds increases your critical strike chance with Backstab by 10/20/30%, and the critical strike chance with your Mutilate ability by 5/10/15%.
Shamans:
# Totem timer icons will now show up under your player portrait when you cast totem spells. Right-clicking a totem timer icon will destroy that totem.
# Tremor Totem now pulses every 3 seconds, down from 4.
# Ghost Wolf: Cast time reduced to 2 seconds, down from 3.
Warlocks:
# Blood Pact now has a tooltip.
Arena:
o Matchmaking: If a queued player has a personal rating higher than their team rating, the matchmaking system will now use the highest personal rating of a queued member of that team for matchmaking purposes, instead of the team rating.
Alterac Valley:
+ There is now a Join as Party option.
Alchemy:
o Transmute Arcanite no longer has a cooldown.
Fishing:
Feltail fishing nodes have been changed to Brackish Mixed Schools; they now produce mostly Golden Darters and some Feltail.
EDIT:
To kind of discuss these...
Resilience will now be more powerful than before. Great...
Chastise is probably worse than before now unless you're fighting a warrior, but it can only be cast out of shadowform, so it's only limited use really.
They finally made mutilate better by giving us some more crit which the build needs quite a bit. I just hope they give us a talent reset =\.
Improved Ghost wolf = insta-cast ghost wolf now.
Players can no longer sell arena teams, make new ones and "start" at 1500 anymore since they'll be using the highest player's rating, which will be nice. I remember running into way too many sellers at 1500 that'll absolutely destroy you =\.
No more need for StinkyQueue.
Thank god Blizzard listened to my Arcanite thing... too bad I'll be done with making arcanite in a couple days and it will be worthless for me. IMO, you could make arcanite special by giving it its own cooldown... just don't make it share one with the others.