While demonstrating Windows on ARM (WOA), Microsoft also showcased the next version of its office suite, Office 15. It sports a revamped application interface.
The interface is based on Metro Design Language, the interface of Windows Media Center and Windows Phone. Microsoft Outlook has received the most pronounced changes so far; for example, the Metro interface enables users to have access to a new visualization for scheduled tasks. PowerPoint will include more templates and transition effects, and OneNote a new splash screen. On May 16, 2011, new images of Office 15 were revealed, showing Excel with a tool for filtering data in a timeline, the ability to convert Roman numerals to Arabic numerals, and the integration of advanced trigonometric functions. In Word, the capability of inserting video and audio online as well as the broadcasting of documents on the Web were implemented.
Source: The Verge