Thank you Inkognitoo and Lady_Shine for the support! I think you'll love this game if mystery and dark stories are your thing.
Inkognitoo, production takes a looong time. Seclusion has been in development for more than a few years now. I've been working on it mostly myself but had many people help me along the way.
The game length is not set in stone yet, but I expect it to be about 8+ hours on average and a lot longer if you like exploring (or get stuck easily).
There is no release date yet, but it's not far away. It's safe to say it'll be out in 2017. It will be released with only English support at launch, but soon after the game will be localized into more languages. German, Russian, and Chinese are the first few candidates I'm considering.