Answers:
1. Yes! 100% for sure we'll have the DRM-free build on Humble.
2. It will be this week, barring anything super-unforseen.
3. I'd prefer to get the fix in for the XBox One controller before I actually do that, though, just to give people an initial build with support for that better in place.
4. Having a similar build on our site is something that will happen in that same timeframe. I've just been slow off the mark on that (sooo many things going on, and then this weekend I basically just crashed out).
5. Thank you so much everyone who is pushing on GOG; hopefully they will come around on things. Honestly at this point I won't mind having "two launches" of the game, though, since this whole game is coming out of the blue. Perhaps by the time they get it up and going, it will be more of an obvious buy for people coming to it, since there is more coverage by then, and the steam store reviews are piling up and positive at this point, etc.