When will this launch for GoG?

Red Hook hasn't given a time frame for release, except to say that it will be available soon after the Steam launch. There's an entirely different process in making the GOG build; they first have to remove all the Steam functionality and test it out on its own, then send it to GOG who will do their own testing prior to making it available for purchase. If the Crimson Court release is any indication, I would expect it to be here sometime this afternoon.

Thanks the for the reply. Its cheaper here and the no DRM. I'll wait for it!

But then again, delays are nothing new on GOG, especially with Darkest Dungeon.

Looks like she's out for GOG, and there's a new update: Patch 21071 (27 October 2017).