More details of Microsoft's Courier tablet have been leaked to gadget blog Gizmodo. Like previous videos and photos this concept animation was produced by Pioneer Studios, a division of Microsoft Entertainment and Devices.

Microsoft is said to be at a late prototype stage in product development where they've begun to show Courier concepts to outside agencies. This video shows an in-depth depiction of how one might use the dual-screen device to work on a collaborative project. The highlight of the video is Pagestream, the heart of the user interface.

The first video showing the user interface of the Courier tablet was leaked to tech blog Gizmodo this fall. Pioneer Studios, a division within Microsoft Entertainment and Devices, developed the concept. The device is said to be in the late prototype stages and consists of two seven-inch screens that respond to gestures and a hand-held stylus.

As seen in the video clip, Courier features endless screens for handwriting, photo taking and copying excerpts directly from the web dubbed the Infinite Journal. Moving content between different applications is fluid and seamless.