BoyGeniusReport has posted a series of screen shots from the next version of Microsoft Office for the Mac. The screen shots show the updated versions of Word, Excel, and PowerPoint. They also show the first look at the new Outlook for Mac, which replaces Entourage. The screen shots show how the ribbon display, first brought to the PC version of Office in 2007, will be implemented on the Mac. Microsoft's Mac Business Unit first previewed Office for Mac 2011 in February. Microsoft Office 2011 for Mac is being rewritten entirely in Cocoa and is expected to ship later this year. Click on over to BoyGenius for the full gallery.