Supersite for Windows: Microsoft has made the Office 15 Technical Preview available to only a few testers who signed a non-disclosure agreement, but Paul Thurrott managed to get a look at the software. He reports that the next version of Microsoft Word, "shows a decidedly friendlier face than does its predecessor, in a full screen experience that indeed mimics some Metro-style design." And while the much-hated ribbon is present, it's minimized by default. The app is also now more tablet-friendly with optional touch mode and full-screen mode.
The other applications in the Office suite feature similar interface changes. See the full article for plenty of screenshots.