If you are not happy with Windows 11 or if you are facing issues on Windows 11 then there is a straightforward way to roll back to the stable version of Windows 10 without formatting your boot drive.
If you're experiencing problems with the Windows 10 April 2018 Update and just can't wait until the solutions are available, you can roll back to the previous version of Windows 10, as detailed here.
Microsoft Photos on Windows 10 Mobile has been reverted back to its former self after the latest update. The previous update had caused reduced app performance for many older mobile devices.
Users who had upgraded to Windows 10 but were unhappy had 30 days to roll back to their previous operating system. But with Windows 10 Anniversary Update, that time window shrunk to only 10 days.
There's some good news for those of you excited about the upcoming Windows 10 preview for phones, as the OS looks set to run on some 512MB devices and might feature a robust rollback system.