TechReviewSource.com posted a comparison of the Windows 7 Product Editions

Windows 7, like Vista, comes in six different product editions, from Starter to Ultimate. The average end user may be confused by the different versions and the choice of which to get may be difficult to make. We've tried to make it simpler and easier to understand with a table and some comparison between each edition. Make sure you know which edition to get when you buy a new PC or retail version before Windows 7 comes out.

Windows 7 Product Editions Compared