It may not seem like much is going on, but I've been working on more than just Detective Butler. Another Umineko fangame, Repercussion of the Golden Witch, has been in development for a couple months now. It was originally going to be a rather short game, but I didn't realize the length it turned out to be, as it rivals an official Umineko game in length. I expect the full game to be roughly 10 hours long, equivalent to the expected length of Detective Butler.
I also have quite a few ideas for future VNs in my head. Time not spent working on the existing two is usually dedicated to fleshing out those ideas.
Considering our entire team is busy with school at the moment, there isn't much free time to work on any projects. Most work is done on weekends.
That said, I expect both projects to be finished before 2013.
Thank you for your patience and support!