Does it say anything about the BLOCK update? The MP update release is stated there, but I'm more worried about the new blocks and stuff.
After the release of this update, we will then integrate the multiplayer modes into a TT_Unstable update which will include everything else that we've been working on since the last update e.g. loads of new blocks and design tweaks. Time frame for this update depends on how much time we need to get the game to a decent level of stability.