Yes, this is a PvP booster, get it to proc, and instant cast even a healing touch. Not a bad upgrade at all.
+ Infected Wounds: The debuff generated by this talent no longer stacks and instead causes the full effect with a single application.
Another PvP change, for the better, since a Warrior's hamstring is a single stack/full effect
+ The Beast Within: The duration of this talent has been reduced to 10 seconds. In addition, hunters with this talent will do 10% additional damage at all times.
Could see more of these guys raiding, look for BM hunters to have less uptime burst and more overall damage output.
* [Arcane Blast]: The buff from using this ability now stacks up to 4 times instead of 3, and each application increases mana cost by 175% instead of 200%. In addition, the duration of the buff has been reduced to 6 seconds.
Extra stack, less time, cheaper cost, a well rounded change.
+ Missile Barrage: The effect from triggering this talent now removes the mana cost of Arcane Missiles. In addition, the chance for Arcane Blast to trigger this talent is now 8/16/24/32/40%. All other listed spells continue to have a 4/8/12/16/20% chance to trigger it. This talent no longer has a chance to be triggered when spells miss.
* [Righteous Fury]: The bonus threat from Holy spells caused by this talent has been reduced from 90% to 80%.
Don't look for Paladins to miss much here. They won't be losing threat any time soon.
+ Judgements of the Just: The reduction in cooldown to Hammer of Justice provided by this talent has been reduced to 5/10 seconds instead of 10/20 seconds.
+ Touched by the Light: This talent now provides 20/40/60% of the paladin's strength as spell power instead of 10/20/30% of the paladin's stamina.
A PvP hit for sure. It's common to see Prot specced Holy PvP geared Paladins in Arena and BGs, this cuts their Spellpower, so it's not a simple single Flash of Light cast to fully heal someone anymore.
+ Seal of Command: This ability now chains to strike up to 2 additional targets when it is triggered by an attack that can only strike a single target.
Crusader Strike just got a new friend, works with Exorcism too.
+ Twisted Faith now grants spell power equal to 4/8/12/16/20% of spirit, up from 2/4/6/8/10%.
Shadow Priests have spirit, now there's more reason to stack it, 20% is a strong number, meaning 1k spirit is 200 Spellpower, not a bad bump if I say so.
* [Fan of Knives]: The damage done by this ability has been reduced by 30%.
FoK will still be spammed in AoE fights, it just won't put rogues as number 1 for dps in the AoE department.
+ Throwing Specialization: This talent no longer causes Fan of Knives to interrupt spellcasting.
PvP hit to FoK and Rogues, won't affect PvE at all, but it does hurt Rogues in BGs.
* [Flame Shock]: The duration of all ranks has been increased by 6 seconds.
This will be in a rotation with an extra shock before it, 6 seconds is a perfect increase.
* [Lava Burst]: This ability no longer ever consumes a Flame Shock debuff off of the target.
All the more reason to use both Lava Burst and Flame Shock in the same rotation.
+ Critical Block: This talent now grants a 20/40/60% chance to block double the normal amount instead of 10/20/30%.
A nice buff for Warriors. Though they aren't the ones to stack block (Paladins are) the chance to block double is not a bad way to push Warriors to pick up a new shield or some extra block gear.
Overall, not a bad patch, I only touched on important things, and I decided not to go into bux fixes or professions changes, Classes were enough for me to hit on.
On that note...