Somehow I doubt Bethesda would show much interest, considering how much they clamped down on id after the acquisition.

They could get on the SteamOS bandwagon, but I doubt it. They seem pretty conservative.

I fear you're right but one can hope. Fallout is my all time favourite series of games (with Fallout 2 being the absolute pinnacle of RPGs in my opinion) and playing Fallout New Vegas recently in wine has made me hungry to jump on the hype wagon.
Anyway, I'm keeping my fingers crossed and I'll be keeping an eye out on whatever the announcement is tomorrow (probably just a hype trailer but might show expected platforms).
Thanks for letting me down as gently as possible.

If you look at what Bethesda did with id Software you will realize that they give about 0.0000000000 foops about Linux support. Trust me, the closest you will get to a Bethesda game on Linux is either through OpenMW, Wine or DOSBox.

I've got to be honest Samsai, that was a lot less gentle than Hamish. I am now trying my hardest to hold back the floods of tears.
You're probably right, but I think with SteamOS around the corner the time might be just right for a change. If, for instance, they have a release schedule looking at fall this year (as is quite often the case with Bethesda's big titles) then it would coincide quite nicely with the release of the next big console (i.e. Steam Machines).
I'm clutching at straws of course. If I was a big name development studio I'd probably take Valve's perverse definition of time into consideration and wouldn't make any concrete announcements regarding Steam machines until they were actually released (if my valve-time conversion calculator is correct that should be sometime in early 2017).