These are the announced changes we have planned for Druids in patch 2.3.

The Restoration talent Intensity will be increased to 10/20/30% mana regeneration.
2.3 change prediction - Intensity

Rebirth cooldown will be changed from 30 minutes to 20 minutes.
So sounds like Resurrection got a buff...

Moonkin can cast Remove Curse.
Moonkins own arena

Tree of Life Form can cast Cure Poison and Abolish Poison.
Moonkins own arena

Tranquility will receive additional additional benefit from spell damage and healing bonuses.
2.3 change prediction - Intensity

The amount of attack power will be increased for items that grant additional attack power in Cat, Bear, Dire Bear, and Moonkin forms.
Feral Attack Power Change?