Starting with the good news, multiplayer is greatly evolving, now also including a chat, and will have many new features in the future.

For the Bad News, we have the enemy of every developer and players, the bugs.
There is only one, major bug, that we are struggling to try solving it:
Playing as Baldi, you might glitch out and everything around you just freeze, you'll be still sending info to the server, but you'll not receive any, so the other player will receive your movements, but you won't receive theirs, as well as all the characters...

Meanwhile that status the code will still be able to act in the gameplay of the glitched baldi, for example, the bully will still be able to work, and you'll still be able to hear character and ambience sounds, the worst case in this scenario is if Baldi Player bugs out before the other players collects 2 notebooks, you'll not be able to use Swinging Door.

Since me and SWA are testing Multiplayer privately, we noticed that this bugs happens me literally at the start of the game when playing as Baldi every time, meanwhile SWA experience it very rarely, that's because he has been the Baldi Player for most of the time.
SWA said that no metter if this bug will continue to exist, he will release the Beta as soon as possible.

That's all for now, let's hope for the best for Multiplayer development, that is slowing the development process quite a lot.