They did a fix for MP last patch, now you don't have to worry about people typing messages greater than 500 characters in a match. This changes everything =P
In all seriousness I think their focus for the immediate feature is fixing all the game-breaking bugs/crashes of the (largely untested before now) Singleplayer side. The Beta was focused on Multiplayer (Whether or not they did anything with that, I don't know.
I suspect for MP stuff they are working on actual features, rather than fixes like SP is getting currently.