Neowin posted a video demonstration of the new "Moorea" application in Office 15

In the video you can again see the hints of the Metro Design Language, as used throughout Windows Phone 7 and possibly to be used in Windows 8, when Branni performs some actions such as saving his tiled content workspace, not to mention the tiles themselves. It also seems that Branni had some issues using the application when he enlarged the images and tried to perform actions using the buttons on the left-hand side, or that some functionality simply hasn’t been included this early into the Office 15 development cycle.

Other Office 15 screenshots leaked earlier this week again hinting at a Metro-styled user interface, however in these early leaks the changes are extremely subtle. Microsoft Office 15 is expected to land in 2012, but this hasn’t been confirmed with Microsoft officially.

  Office 15 "Moorea" application demoed on video