Here are updates for quite a few of the current Windows Dynamic Themes from Microsoft.

Keep in mind all of these themes, with the exception of the Bing theme, are base don photographs that are submitted by community members like yourself.  Whether you are a professional or budding photographer you can submit your pictures to Microsoft’s open call for images and get your stuff featured in a theme used by who knows how many people world wide.

Bing Maps Aerial Images of Europe

Regents ParkLondon, England Dunstable RoadDagnall, England
Wembley StadiumLondon, England

Aqua Dynamic

South Toe River near Black Mountain Campground, North Carolina, U.S.

Fauna Dynamic

Trout preparing for the end of the season in a stream, Colorado, U.S.

Flora (Flowers) Dynamic