For this release we want to give special thanks to the ES-DE team for the big 2.2 update and fixes in 2.2.1 patch and the constant communication back and forth on 2.2 development.
Updates:
The following features have been updated
All standalone emulators
EmulationStation Desktop Edition (ES-DE) to 2.2.1
RetroArch and cores
The included ES-DE themes
Bugfixes & other changes:
ES-DE have made changes to their theme engine, so we recommend everyone to update any custom themes they have downloaded from the builtin theme downloader or the web.