If you're an Office user, you can now get to see the preview of Office 2016.

In March we introduced an IT Pro and Developer Preview for the 2016 release of our Office desktop apps on Windows, and now—as a next step—we’re ready to take feedback from a broader audience. Today we’re expanding the Office 2016 Preview, making it available to Office users everywhere in preparation for general availability in Fall 2015. Microsoft Releases Public Preview of Office 2016 [blogs.office.com]