The details come from a purported product roadmap obtained by Mary Jo Foley of CNet and published on Wednesday. The alleged details also suggest Microsoft plans to launch a new version of Office for Mac in April of 2014.
The updated versions of Office are revealed in the roadmap as "waves" set to launch across the 2014 calendar year. A source who spoke with Foley said the leaked info was accurate as of at least the start of this year.
The document refers to the project as "Gemini," which is apparently set to include the Metro user interface elements Microsoft has pushed with Windows 8 and Windows Phone. The first product to ship, Gemini Wave 1.0, will be updates for the core apps of Office on Windows: Word, Excel, PowerPoint and OneNote.
Then in April of 2014, Gemini Wave 1.5 is expected to bring about Office for Mac, a refresh of Office for Windows RT, support for Perspective Pixels, and a refresh of the suite on Windows Phone.
Finally, The October 2014 Gemini Wave 2.0 is expected to debut Outlook for Windows RT, in addition to the rumored Office for both Apple's iOS, as well as Google's Android platform.
The latest details from Foley contradict a report from late last year that pegged Office for iOS and Android for a mid-2013 launch. There have been indications for some time that a version of Office for iOS is in development, including a purported iPad screenshot that leaked more than a year ago.