Back in November, we explored the number of editions of Windows 7 that Microsoft was working on. While doing a little more digging, we stumbled on the following upgrade paths for Windows Vista to Windows 7. These are not confirmed, but I am told they are what Microsoft is currently considering:

• Windows Vista Home Premium Edition => Windows 7 Home Premium Edition
• Windows Vista Business Edition => Windows 7 Professional Edition
• Windows Vista Ultimate Edition => Windows 7 Ultimate Edition