The Verge posted an article on Microsoft Office 15 features and improvements

Microsoft is currently testing a Technical Preview version of Office 15, its next-generation office productivity suite. A small number of third-party partners, OEMs, and businesses have access to the code, but Microsoft is staying mum on the exact features of its next release. We previously took a closer look at Office 15 with detailed screenshots of its new Metro inspired interface, showing off the clean and simple look for the future of Office. Today we are able to share details on a number of new and improved features in each of the core applications for Office 15, thanks to several people with access to the early Technical Preview code. From Touch and Reading Mode to a Weather Bar feature in Outlook 15, we have exclusive details on Microsoft's plans — read on to find out more.

  Microsoft Office 15 features and improvements