I'm storming to the Steam forums to ask that out. The track record for game updates to this seems well. Okay, posted my question over there, hopefully the developers ACTUALLY see us as non-second class citizens, and I've faith in them in that.
However, Torque? And Milla's adventure mode? Whew! I can now scrap Milla's classic mode and sit back and wait, but not after I first enjoy Torque!
EDIT: I got a word from the developer, Seraphna:
"Yes, it will show up everywhere. It's being added to the game as a normal update."
Source:
http://steamcommunity.com/app/248310/discussions/0/490124466456633344/#c487877107133191315 Oh, I just noticed the same date of release question. I'd rather not ask this question to the developers, as they themselves are unsure of when it'll be released, but as long as I'm told that it'll be coming to GOG, then I shall wait patiently until then.