To test early features we have a public alpha branch on Steam. This branch will always be compatible with the main branch. We really appreciate your feedback and please let us know when we break things!
To join the alpha you'll have to exit BigScreen, right click on BigScreen in Steam, go to properties, betas, then select alpha from the dropdown.
The current list of different features / known issues in the alpha branch will be updated here: https://steamcommunity.com/app/457550/discussions/0/351660338715016537/