Since the FAQ thread is empty and locked I thought I'd post some questions in a separate thread.

1. What's the state of Linux (and Mac too I suppose) support on GOG?

2. Does The Long Dark have a development road-map or feature-list or some other kind of development progress tracker?

3. Will the GOG version support achievements via Galaxy?

4. What controller support is available?

5. What accessibility features are available (e.g. colour-blind options, FOV and view-sway options, subtitles and closed-captions, etc) ?

4: Plugged my controller in, didn`t do anything in game. tbh though, M&K is better for these games.

5: FoV slider goes up to 90, although I`m not sure it actually is 90. Hopefully higher settings will be added.
Your character doesn`t sway in game \o/.
There are subtitles, not used it myself though.

1. Not sure about it, I know they will be available. I already have seen links to them in the gog links section of the library but I'm not sure if they work already.

2. Yes absolutely. Most of it can be found on the official Hinterland Studios forum: http://hinterlandforums.com/

3. It will support the achievements in the near future.

4. I believe they want to support all main controllers available atm, not sure about it. I know my wired Xbox controller works with it.

5. As far as I can tell it is 90 degrees. Which is exactly the same range as the human eye.