A: Microsoft unveiled the new touch interface for Windows 8 at the D9 conference on the 1st of June 2011, and it looks really great. It has a foundation on the Metro UI found on Windows Phone 7, giving a tile-based interface that displays information related to the tile.
Check out this Microsoft video of the new Windows 8 interface. There's also another video at that really shows the power of the new touch based interface. It looks awesome! A transcription of the D9 interview is available, too.