Yesterday Microsoft launched a beta of the new version of Microsoft Office 365.
I found the preivew links were fairly well hidden...
Sign up for the preview / beta here http://www.microsoft.com/office/preview/en/try-office-preview
here is a little blurb on whats new http://www.microsoft.com/office/preview/en
While microsoft seems to be avoiding version numbers and naming at all costs... the preivew / beta could represent Office version 15 or perhapse Office 2013; where the current released Office 365 could be considered Office 14.
You can still sing up to demo the current / released version here http://www.microsoft.com/en-us/office365/online-software.aspx...