Our plan is to deliver Windows 7 approximately three years after the January 2007 general availability launch date of Windows Vista. You have told us you want a more regular, predictable Windows release schedule" and he said that was the impetus for setting the 2010 ship date.
You've also let us know you don't want to face the kinds of incompatibility challenges with the next version of Windows you might have experienced early with Windows Vista. As a result, our approach with Windows 7 is to build off the same core architecture as Windows Vista so the investments you and our partners have made in Windows Vista will continue to pay off with Windows 7. Our goal is to ensure the migration process from Windows Vista to Windows 7 is straightforward.