Haunt now only increases all damage done by your Shadow damage-over-time effects. (Old - All DoT effects)
Demonology
Metamoprhosis now increases your armor contribution from items by 600%. (Old - Increased armor by 600%)
The Ritual of Doom spell doesn't require the Warlock to immediately enslave the doomguard anymore.
Fel Synergy now gives you a 50/100% chance to heal your pet for 50/30% of the amount of spell damage done by you. (Old - All damage)