Arcane Casts are gone for Healdruids in MoP beta.
Also Palas just hava a holy spell
Don't know about resto Shamans, but I think they have only lb left.
I love Power Word: Solace because it gets you 2% of your mana every time you cast it.
(it comes for 7k dmg on a 85 training dummy with 375 gearlvl, not thaat much, but u can spam it to reg a lot of mana during a fight. Palas, Druids, Shaman have to pay mana for their spells)
Also don't forget the lvl 90 Spells. Halo does a lot of dmg (didn't see the other 2 ultis in action)
What I'm really missing, is Manaburn
But I'm happy to see, the holy priest getting better in pvp
I love holy more than disc and the new fountain of light glyphe is awesome! You are stunned? Np, the fountain heals you and the rest of the BG completely up with it's 15 charges and you can cast your life saving wings now while stunned.