I have recently played through every Alan Wake game and some Control (got bored after getting stuck in the boss fight against Salvador, though).
I know this will first be released on Steam and I've already prepurchased it there. To be fair, the choice makes sense considering Steam is easily the platform with the largest userbase (and buyerbase).
Even so, for the sake of game preservation, I wish for this to be released on GOG all the same.
The good news is several of Remedy Entertainment's games already are, so I'd predict Resonant will receive a GOG release eventually.
It is only a matter of time.