Q: Holy Priest: Mana regen is a flawed mechanic for Mages and Shamans and Hunters. Paladins and Warlocks are just cheaters (cheers). People don't have mana and that's why there are so many Shadow Priests. Real mana regen needed (cheers).
A: So you want to cheat too? (laughter) The Spirit stat in general will be improved for WotLK. The mana regen needs another pass. At the same time, the mana bar will not be turned into an energy bar.
The reason I asked was that I have a "spirit-build" Priest, AND because I still think that Spirit is an awesome stat... the problem is that you need it in so large amounts before it gets really good for any other class than priests.... and thats a bit of a shame!