While Star Wars Battlefront is the big draw for Catalyst 15.9.1, AMD's drivers also include optimizations for the Fable Legends benchmark. Some issues in Diablo 3, Dragon Age: Inquisition, Assassin's Creed Unity, and DiRT Rally have also been resolved. Problems with uninstalling and updating Catalyst drivers for graphics cards connected to certain FreeSync monitors have been fixed, too.
Like any beta software, the Catalyst beta does have a few warnings. The Star Wars Battlefront beta and DiRT Rally may cause graphics corruption with Crossfire enabled, and Grand Theft Auto V may crash on certain brands of Radeon R9 390X cards.
The Catalyst 15.9.1 beta supports Radeons going back to the Radeon HD 5000 series on Windows 7, 8.1, and 10. Be sure to check the download page for a full list of fixes and issues. AMD is looking for feedback on its Issue Reporting Form, as well.