Looking at the new Priest talent trees, you still have to decide between having
Improved Divine Spirit from the Discipline tree and the top level talent from the Holy tree (
Giardian Spirit), but some of the earlier talents in the Discipline tree have been tweaked to make them a bit more useful as a healer. I roughed up this as a possible
build.
I've only had a brief look at the Warlock trees, but it looks like they have a noticeable change in play style (raid wise). No
Demonic Sacrifice 20 point talent means they will no longer be their own mana battery (Felhunter sacrifice basically meant you regenerated you mana as fast as you could spend it - except chain casting
Seed of Corruption, that would drain it ). It looks like this has been replaced with
Master Demonologist (although it's 25 point talent), and, as it looks like the Destruction tree is boosting Fire damage and reducing Shadow damage, they will have to develop a spell-cycle that is more than just a spamming Shadowbolt. Time will tell, it's barely into Beta