Too much hassle to use their packager and submission process, but the beauty is anyone who downloads and plays the GOG version is still going to get hit with a "click to download the new version" at startup, so hopefully they'll do that.

I absolutely didn't accept any responsibility to update a specific platform to the end of time nor would I ever. I specifically told GOG I would link new non-GOG versions to their users when the time came and they were ok with that.