The changelog is as follow:
General
- Team select menu now displays a message if a team is full
Workshop
- Downloading Workshop files will now show download progress %
- Added Custom map filter to the in-game workshop menu
- Stock RO2 maps show up to the in-game workshop menu
Fixes
- Fixed a case where weapons would not respect the ammo resupply timer
SDK
- Fix for workshop uploading the wrong version of the file (from MyGames)
Also keep an eye out over the next few days for more announcments as we judge the second phase of the Counterattack mapping contest by playing the maps with the community!