Splashtop Drops Windows 8 Metro Testbed Onto Android
To try it out for yourself, you’ll need a PC with the Windows 8 Release Preview installed, but once you have that taken care of, you’ll be able to poke around (pun!) Microsoft’s new touch interface.
Swipe from the left for multitask app switching

Swiping slowly from the left will two apps side-by-side

Among the features available for perusal is swiping to the left to switch apps, pulling up the Charms menu with a right-swipe, closing an app by swiping from the top, the ability to run to apps side-by-side with a slow left swipe, multi-touch gestures, and pinch-to-zoom.
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The app usually costs a whopping $49.99, but it’s currently on sale for $24.99, so get it while it’s hot.