Saw this while browsing MMO champion..
Shadow
* Twisted Faith now increases your spell power by 4/6/8/12/16/20%. (Up from 2/4/6/8/10%)
* Improved Spirit Tap effect changed to : Your Mind Blast and Shadow Word: Death critical strikes have a 100% chance and your Mind Flay critical strikes have a 50% chance to increase your total Spirit by 10%. Mana regeneration effect remains unchanged.
10% more spell power from spirit in conjunction with a much higher uptime on Improved Spirit tap seems like a great change. I initially read this wrong and thought they were removing the mana regeneration effect, but now that I look again, that is not the case. They've been making a lot of subtle changes to shadow priests recently (devouring plague cooldown, mind blast mortal strike) and it looks like, at least for now, they're getting bumped up a little more.
Mmmm.... Judicanti will like.