Well according to MMO Champion these will be our new set bonuses with the tier 10:

Item – Druid T10 Restoration 2P Bonus - The healing granted by your Wild Growth spell reduces 0% less over time.
Item – Druid T10 Restoration 4P Bonus (Rejuvenation) - Each time your Rejuvenation spell heals a target, it has a 2% chance to jump to a new target at full duration

Sounds interesting!   If you want to know more, or you are interested in other class/spec bonues, check out MMO directly