Preview at WWDC likely in June, followed by September launch.
Microsoft Office for Mac 2011 Updated for MacBook Pro Retina Display
We’re happy to announce that Office for Mac 2011 (version 14.2.4) now supports Retina display for Word, Excel, PowerPoint, and Outlook. Text everywhere is incredibly crisp and all key areas of the interface are now sharper than ever. We hope you enjoy this fantastic software experience!
Beyond Retina display support, the update also brings a number of other enhancements for Outlook, including calendar event reminders, Mountain Lion compatibility for signatures, and fixes for several other issues.