Some early screenshots of Microsoft's Office 2011 for Mac have been leaked, a report claims. Not the least because the updated software is only due late this year, the shots are said to represent early code, still in transition to a final Cocoa-based form. Of special note may be Outlook, which is replacing Entourage and employs a streamlined design paired with the ribbon interface first introduced for Office on Windows. Several of the screenshots can be seen below.