[align=left]SEATTLE - Microsoft Corp. has unveiled multiple versions of its upcoming Office business software suite with features that aim to simplify worker collaboration and improve efficiency. Microsoft Office 2007, also known as 2007 Microsoft Office System is Microsoft's next release of its Office system. This version will supersede Microsoft Office 2003. Microsoft Office 2007, which was formerly known as Office "12" in the initial stages of its beta cycle, is to be released in January 2007 for end users and November 2006 for corporate customers (to coincide with the edition launches of Windows Vista), and will feature a comprehensively redesigned graphical user interface, codenamed the "Ribbon". The first beta of Office "12" was released on November 16, 2005, to a limited number of testers[/CENTER]