The wait is finally over, and Chat is here! You can access it via the given link, or via the button in recent changes.
Wikia Chat may be a bit buggy, as it isn't quite finished yet, however it's still usable by the community. Where this leaves the IRC, I have no idea, though for now both will be kept online.
When using chat, please keep your behavior civilized, as abusing chat will lead to a block. Thanks, and enjoy the feature!
Happy editing and chatting!