As a player who recently fell in love with Circle of Healing, this news hits me pretty hard: Blizzard is considering adding a six-second cooldown to CoH and its Druid analogue, Wild Growth. Basically, they're not happy with the fact that CoH often provides upwards of 70% of the healing done by a Holy priest in a raid. The design, according to Ghostcrawler, is for Holy priests to be versatile healers: we have a fast heal, a slow one, a HoT, and several group heals, as well as a couple of unique tricks. But the new, smart CoH sort of blows this out of the water, making Circle the answer to almost every situation, and making AoE healing Holy's de facto speciality (GC's phrase is that it makes our other heals "look like poo").
I'm not sure what I think about adding a cooldown to CoH as a solution to this, though. Initially, I hated it; it looked like Blizzard brute-forcing us to play the way they want us to, instead of making it more attractive by buffing other spells or pushing less AoE damage on us. On the other hand, there is talk of reducing AoE damage necessary. And the more I think about it, the more I think a cooldown might actaully feel good. I do sort of miss my other spells; I don't think I used Greater Heal more than a dozen times the fist raid I did after getting Circle. With a cooldown I could save Circle for when I really needed it. I do like the skill involved in selecting the right spell from our arsenal to deal with the incoming damage - it helps keep me awake during those late raids, and it brings an element of strategy that is missing when I'm just spamming CoH three out of every four GCDs.