Windows 7 Codename ViennaLocked
Around the time of Windows XP’s release, internal sources pitched “Blackcomb” as being not just a major revision of Windows, but a complete departure from the way users today typically think about interacting with a computer. For instance, the “Start”/”Taskbar” philosophy, introduced in Windows 95, might have been replaced by the “new interface.” Additionally, a completely new paradigm for storing files was to be incorporated, and the window by which software accesses core operating system functionality would be revamped for the first time in over a decade. Although some elements of this vision have made it through to Windows Vista (in particular the new programmer APIs, the 3D acceleration, and vague vestiges of the original vision for a new user interface), Windows Vista is not commonly seen to be a stark departure from the tradition set down with Windows 95.
It has been publicly stated that the team that designed the Ribbon interface for Microsoft Office 2007 will play an active part in redesigning Windows Explorer and possibly other UI elements.
Apparently Microsoft Will Not Be Shipping 32-Bit Versions Of Windows 7