I just want to try to get all these in one place, as I've seen some different things brought up in various threads and forums and thought it would be an idea to try to consolidate them.
- The additional damage from Chaos Bolt using Grimoire of Sacrifice is now applied as a DoT.
- Mannoroth's Fury no longer works with Cursed Auras.
- Molten Core now has a stack limit of 10.
- Unbound Will now effects Minions as well as the Warlock (this might just be when using Soul Link, if someone can confirm?)
- Felguard health has been increased.
- Threatening Presence can now be correctly toggled on/off with a left click in the spell book.
- Dark Soul is now a Curse, and thus undispellable.
- Grimoire of Sacrifice cooldown reduced to 30s.
- Sacrificial Pact and Dark Bargain are no longer on the GCD.
- Sacrificial Pact now lasts 20s.
- Demonic Gateway must now be clicked to use.
- Gateway Control Stones are available from Reagent Vendors in capital cities to allow party and raid members to use Demonic Gateways without clicking.
- Burning Rush and Carrion Swarm have new graphic effects.
- Fury Ward while in Dark Apotheosis now has 2 charges.
- The graphical radius for Immolation Aura now matches the area of effect when using Mannoroth's Fury.
- Burning sound from Destruction's Burning Embers fixed.
- Damage taken using Glyph of Falling Meteor is greatly reduced.
- Unending Resolve, Shadow Bulwark, Sacrificial Pact and Dark Bargain can be used while under the effects of crowd control.
- Demonic Leap 'flying backward' bug fixed.
- Glyph of Soul Consumption no longer works with Shadowburn.
That's what I've noticed so far, let me know if there's any I missed.