Windows 8 previews to expire in about three weeks’ time
The world may not have ended last week, as many doomsayers had feared (or hoped), but the continuing existence of our planet means that the various preview builds of Windows 8 will all expire next month.
"Starting from the expiration date, you may not be able to access any unsaved data used with the software,” warns the Release Preview’s EULA. “Any applications you receive through the Windows Store will also cease to be available to you in future versions, unless they are made available for re-download and you re-acquire them. You may not receive any other notice."
If you are currently running a preview build and wish to upgrade to Windows 8 proper, please note that you will lose all your apps and Windows settings in the process.