Windows 8.1 Update 1 to feature minimize and close button options for Metro apps, boots straight into desktop
There was a leaked screenshot from the upcoming Windows 8.1 first update, revealing Modern UI (Metro) apps minimized to the taskbar in desktop mode, indicating that we might be able to run apps with the new interface in the traditional Windows environment, too. Now screenshots of the apps themselves are out, and they indeed show minimize and close buttons will be in store for Metro apps, when Windows 8.1 Update 1 hits your computer.
Also, it seems that Microsoft will be booting straight to the desktop interface by default this time, instead of giving it to you as an option, in order to calm the nerves of perplexed traditional users, which didn't know what to do in the Modern UI when they turned on a new computer, or got the upgrade to Windows 8. You can then fire up Metro apps from within the desktop, too, and never even have to go to the new UI, which might appeal to people who work Windows with a keyboard and mouse, though the ones equipped with a touchscreen device would find the tiled interface handier.
source: Wzor
Things that are NOT allowed: