Daedalic Entertainment announces Chaos on Deponia is now available on Steam, and on sale for the first week of release. Here's a description of the game:

With this long-expected sequel to the critically highly acclaimed and lavishly praised Deponia, the player enters round two. Chaos on Deponia turns out to be even wackier than its predecessor and instantly puts the player under its spell. After the events on Deponia, it seems that Rufus came to his senses.