I just found out about this and I am so excited. I'm a huge Gaiman fan. This is the guy who wrote Coraline, Neverwhere, and American Gods (and many other more amazing books) if you are unfamiliar with him. He's brilliant IMO, and he's always intelligent and surprising.
He kept this project a secret, but now it's ready for release in late 2013. I just love the idea behind this. The setting is the 1920s, and you are a ghost who desperately wants to rid Wayward Manor, your home, of all manner of horrible and unpleasant people. It's got humor (macabre, of course), intelligence, charm and what sounds to be a brilliant story from Gaiman with some awesome visuals.
Here's a link and there's a video of Gaiman discussing how the idea came about and what they're trying to do with this. It's not a typical game release! Wayward Manor and Neil Gaiman
From what I've read, it's a puzzle/adventure type game. Not a HOPA though. I just think the graphics look amazing... sort of Burtonesque in a way, but better!
Check it out if this sort of thing interests you like it does me!