If you like testing out new software and providing invaluable feedback to help make it more reliable then this just might be for you.

The Microsoft Office Pre-Release Programs Team is looking for home and business users to test  future versions of Microsoft Office out in the real world.

The Office team at Microsoft is looking for participants to join us in pre-release beta programs!  Your feedback in these programs will be instrumental in building the best productivity software and services available. The programs will span across the full family of Microsoft Office client, server and cloud services both Windows and Mac.  The family of products include Word, Excel, PowerPoint, OneNote, Visio, Publisher and Outlook applications, as well as the Exchange, SharePoint and Project server products and cloud services.

Source: Microsoft Office Pre-Release Programs SharePoint Page