elcook: I don't think I understand the question :) You mean a new game that he wants to release on GOG, that didn't go through the curation process? If that's what you meant, than no. The curation itself is not done this way.
Essentially yes, when they are releasing a new game on GOG when they already have a game here (or even if they don't already have a product on GOG). Okay so my next question is why not?
The curation process could all take place via the dev portal. The biggest thing we hear from devs is contacting GOG to get a game released can be difficult, there have been times where dev's didn't even get a response or GOG was slow to respond and this process seems to be outdated.
Why not have a system in place where devs can log into the dev portal, click add new game, upload their game build with a discription, videos, pictures, etc. Stuff you would find on the store page.
Then GOG get's a notifcation that a new game has been uploaded or have some kind of queue of games waiting to be approved. GOG can then hit a button and approve or deny a request to have the game appear on GOG, after downloading and testing the uploaded build. After that, when the approval process is done, somebody at GOG could just push another button themselves to have the game go live and be on sale, you could also give devs control over this after being approved as well to allow them to release at their own pace and schedule, as well as allow them to change stuff included on the Store page like the game description as well supported features for their game.
You could also have a communitcation system built into the dev portal to allow direct communication between dev and GOG, which gives GOG a place to expalin why a game might have been rejected.
Why not link to the dev portal on the indie page and tell devs wanting to release on GOG to contact GOG to get set with a dev account?
This all would allow GOG to automate the process quite a bit without GOG changing from it's core values. GOG can then handle releasing more games.
Everything that happens on GOG / Galaxy should take place from a centralized system, and the dev portal seems like the perfect place to make this happen. This is why Steam is so successful, and GOG can do the same while keeping the curation process.
You could even allow the dev portal to be accessed via Galaxy and inlcude a link to it under your account name IF you have a dev account. IMO this is the direction GOG should be heading.