After releasing totally revamped Facebook Beta for Windows 10 Mobile, Facebook has release brand-new Facebook Beta app for Windows 10 (PC & Tablets) too. The app is now available in Windows Store and can be installed by clicking on Install link given below.
On trying to login the app currently throws an error and we will keep you updated if it gets fixed.
Facebook Beta features:
Not much details have been provided but we can notice the Brand New UI in screenshots provided.