This is good news indeed, but I have a question.
Does this mean older releases will get updated? Like i76?
I guess this will be a priority only in games that are 'problematic' in versions currently available on GOG. Otherwise they will probably focus on preparing new releases with hardware accelerated gfx like Tomb Raider or Wing Commander 5. Don't really count on seeing GOG old releases upgraded to Glide popping every week (although it would be just great).
In the end, does it really matter if GOG updates the old installers or not? Can't people simply install nGlide on their Windows system, and any current GOG games with Glide support would detect the presence of a 3Dfx "card", and let you choose it? Or is it hard-coded into the GOG installers that they'd never choose 3Dfx support, even if they could?
Next good news would be if GOG could integrate Munt MT-32 emulator with DOSBox, as nowadays Munt seems to work quite well. But for that they'd need the MT-32/CM-32L ROMs from Roland Co. Too bad Roland seems to be in a habit of even sitting on their own IPs, than making some money of them. But maybe GOG could persuade them, after all is there nowadays, or has there ever been, any interest to MT-32 compatibility besides PC retro gamers?