They certainly have! In addition to the entire engine, with a commitment to Linux, and it currently working in Ubuntu (at least), they've released the game assets to the tech-demo/teaser for Asylum, to give the adventure game & modding community something very finished to play with. Also, upon release of the Asylum game, they will be producing a (closed) Asylum SDK, much like Frictional did with Amnesia, so that the modding community can do conversions on the Asylum game itself.
We should keep our eyes out for the next Dagon-based adventure called "Adamantus" as well.
It is also going to be a beautiful, atmospheric, first-person adventure game. It is by a different team, called RealmsForge, who will certainly be collaborating with Senscape as the engine continues to be improved-on. I've had a short interaction with the lead designer of Adamantus, Cleo Mullins, and she confirmed that they're pretty excited to bring the game to all of Dagon's supported platforms.
This is a really wise move... I think you kind of have to do that with indie titles these days. You need to capture all your revenue to keep going. Due to the lukewarm critical reception on Double Fine's "The Cave" (and the delays due to bugs), it may well be our Linux community, and the Mac folks, that make that title come out ahead. Not to derail the the topic (we should discuss The Cave on the already-existing thread), but I'm just drawing a comparison.
Anyway, what's most exciting to me is that Adamantus will not be in the horror or survival-horror genre, but a science-fiction adventure instead! Seeing that they're hosted on Senscape's site, along with their forums, I'm thinking that they are strongly supporting this team to help get a second independent title kicked off on Dagon.
Open-source, great-looking, and strongly committed? Hell yeah. These are the good-guys :-)
(Oh, and NO they didn't pay me a dime... actually, I'm giving THEM a crap ton of my hard-earned Linux programmer cash, hehe)