Bit of interesting background, the implementation of an animated desktop feature in Windows Vista was actually first developed by Stardock. They then demonstrated the idea to Microsoft who partnered with them to produce the Ultimate Extra, DreamScene along with a batch of its original content. Stardock then shifted its focus on DeskScapes - a free extension to DreamScene which allowed for dynamic renderings instead of just static video, as well as a community to share user-generated Dreams.

As you might the same question I asked when I first heard about this, how Microsoft will ever approve of this? It’s basically slicing a huge portion of the already miniature Ultimate Extras cake to share with everybody. But it turns out Microsoft is fully aware of this release and Stardock’s involvement in the original Dreamscene is only as a content-provider.