I was thinking about the Tree of Life raidwide aura (+6% healing received to party and raid members) and suddenly thought... I think this is disappearing in Cataclysm. I'm fairly certain it's disappearing, as I haven't seen it noted in talents on the beta. I imagine it's gone along with the permanent tree form, though I think it's a shame if it does disappear.
It correlates with the Moonkin +haste and spell crit auras and Leader of the Pack aura. The Moonkin +haste is, so far, still in beta (I don't believe spell crit is) as is Leader of the Pack. It would be great for the ToL aura to remain as well. I could see two possibilities for this: The first option I see is the increased healing received is only up during the ToL cooldown. While less useful overall, it would emphasize the ToL cooldown situational use and perhaps buff that up a little bit more. The second option would be for the +healing received aura to be attained once specced into Tree of Life, but the aura will remain up 24/7 (while in Caster form as well as ToL form). This would correlate with the changes to Master Shapeshifter (which now provides +4% to healing in Caster and ToL forms).
I may be wrong about the aura disappearing, since I'm not in the beta to test it. Hopefully it's still there already, but in case it isn't, I think this would be a good idea to put it back in. I made a post on the Cata forums about it (here), though it looks like it may be swamped out pretty quickly (or lost amongst the millions of OMG SAVE ToL FORM posts), but hopefully it'll be spotted!