We have released a new dev version for the new theme gallery.
It follows the plugin gallery where now everybody can upload themes and plugins on getbblog.com.
Let me know if you find any bugs related to this feature.
Offer to do a sort of themes on the count of downloads (as on the website), or to do any filtering, so that all themes have an equal chance to be downloaded.
Sort in BBLog should be the same as on the homepage, with some delay because of caching mechanism.
Filtering is overpowered because we currently have just a few entries.
You can make the Association "Gallery Plugin and Plugins" in one menu item : Plugins, as it is done with Themes.