The V2.2 update is here including all possible platforms. It's also on Linux (I can't build it on x32 unfortunately). Here what's in this update:

Added/Changed

• Multiplayer is finally back using a new network provider and you do not need to host a server. It's available on all possible platforms.
• You can now see opened doors if you're a seeker, or when you're Baldi on multiplayer.
• Added a button to open the folder of saves. (Windows & Mac)
• The loading screen has been changed. You will now load to the warning screen instead. You can still log in through the main menu.
• The login screen has been also redesigned.
• The game tips were changed after a while lol
• FPS is now a toggle option (Debug Stats) on advanced settings. FPS can also be displayed on the console window (F8). Ping will be displayed if on multiplayer. (10/5)
• The barn in farm mode wasn't really good, so we made a couple of improvements. A minimap has been added. A missing animal will show their location every 30 seconds. Rounds have been decreased from 5 to 3. Scores have been adjusted as well. (10/4)
• The game has been optimized a bit. It should run smoother on windows. (10/7)
• The cheat menu has been added to other modes. (10/5)
• Added GameJolt integration. You can log in or register with GameJolt. (10/7)
• Birthday bash mode is now complete with a couple of changes from the original. (10/9)
• Added an option to turn off YCTP.
• Added an option to turn off real-life daylight in-game.
• Some rooms on floors 2 and 3 have been painted with new textures.
• The character posters were moved back to the detention room. The other posters are moved to the second-floor security room. That was a mess since V1.0.1. (10/9)
• New achievements have been added, including some secret ones. You can also earn GameJolt trophies along with them. (10/10)

Bug Fixes

• Keyboard controls can once again be changed mid-game.
• Mrs. Pomp will no longer say "You There!" when she screams at you for being late. (10/8)
• Fixed an issue where beans keep moving when chewing gum. (10/8)

I couldn't add new characters in time, but I added a lot of content to this update. Thanks to who those still playing the game.