It is now possible to upload and subscribe to maps on Steam Workshop.
New Scenarios category has been added. (Workshop)
In that category, you can find maps that you have subscribed to in Steam Workshop. The game will try to download those maps every time it is launched.
Map editor was slightly reorganized and missing features have been added.
An official guide on how to use Map Editor has been posted and can be found here:
https://steamcommunity.com/sharedfiles/filedetails/?id=2337029413
An official guide on currently available cheat codes has been posted here:
https://steamcommunity.com/sharedfiles/filedetails/?id=2337018267