The Verge has some screenshots of Office 15's interface taken from the Technical Preview released in January.



From ArsTechnica:

Though Microsoft is extending the Metro styling to many of its products, Office 15 will still use the ribbon interface first introduced in Office 2007. But that ribbon interface has been given a Metro twist.

The Office 15 applications have an interface that has been substantially pared down. The ribbon itself will now default to being collapsed, and the gradients, panels, and dividing lines that are a major feature of the current Office interface have for the most part been removed.

  Early Office 15 screenshots show elegant fusion of ribbon and Metro