Earlier this week Microsoft posted the latest additions to this popular theme by adding two new pictures to the dynamically updated collection of Windows 7 background wallpapers.

Isle of Lewis

Rugged sea stacks of the Isle of Lewis, Scotland

Georg-Brauchle-Rin U-Bahn Station

Georg-Brauchle-Rin U-Bahn station in Munich, Germany

Grab the entire original Bing Dynamic RSS Windows 7 Theme to get the other 52 wallpapers in this theme.