http://store.steampowered.com/app/78317 ... A_The_Ark/
From what I'm reading it definitely looks like a potential most-wanted title.
No official release date as far as I know.
Seems it had a Kickstarter campaign a while back: https://www.kickstarter.com/projects/18 ... max-linux/
Actually that was the second one. The first one raised $92,000. And they say they've been throwing their own money into it as well.
Their choice to have a real-time combat system where you completely control your character is very interesting. I was expecting a more traditional turn-based style of combat. They have intentions of still keeping the combat tactical.