Back in November, I explored the number of editions of Windows 7 that Microsoft was working on. While the company has not officially given a list yet, it was clear that Windows 7 Enterprise Edition and Windows 7 Ultimate Edition were definitely coming. Furthermore, there was an obvious avoidance of naming a Windows 7 Business Edition, though there was a mention of a Windows 7 Small Business Edition. While doing a little more digging, I 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

Full Story: http://arstechnica.com/journals/mic...options-for-upgrading-from-vista-to-windows-7