Microsoft allowed Windows Vista Magazine to bundle up every wallpaper from Windows 7's regional releases and, boy, we're glad they did. One file brings a lot of new looks to any desktop, Windows 7 or otherwise. The 29MB download includes most of the wallpaper from the free and legitimate Windows 7 themes we've peeked at, but also adds a few (apparent) newcomers from the international betas of Microsoft's upcoming OS. If it's overkill for you to grab all the wallpapers and drop them into your picture archive, Windows Vista Magazine also thumbnails and hosts a download-able.JPG of each wallpaper at the link below.
Note: You'll need a third-party app to unpack the .rar-formatted all-in-one file; we recommend 7-Zip for Windows, the Unarchiver on Macs, and most Linux systems have something you can search for in the repositories to get the job done.