YES, Star Citizen (finally) Officially Confirmed for Linux by the man himself!!!
"... by the way, we'll gonna be supporting Linux."
"We'll be on Linux ... we like it. I think most engineers will tell you that they prefer Linux ... to Windows actually, especially in the back-end server world."
1st quote is at 21:45 (already skipped to in that video link above.
2nd quote is at 45:20 (question & answer). CR (Chris Roberts) also says "all the major engines are supporting Linux" at [47:25]. =)
Here's another great video of Linux love and DRM hate (with an interesting developer's opinion on piracy) from last year's PC Gamer panel with more indies and game devs at PAX:
Click here for a brief history of speculation of Star Citizen on Linux on my part.
And here for an article about the rise of Linux (including gaming on Linux).
Here's also a new blog I discovered covering gaming on Linux which updates fairly frequently (multiple articles per day) as opposed to steamonlinux.com
It's like Phoronix but for games! (Since Michael is a self-professed non-gamer).