Mailing the story:

Desura has been open sourced as Desurium. The code is available under GPL v3. However, all the art and other assets are still owned by Desura. More details should be available soon. Desura Devs have been very friendly and accessible to the community from beginning. Open sourcing the game client is a great step forward and not only it will improve the client but will also attract more developers meaning more games for Linux.