Here you'll find reply Point_Man got from Jeff. Projectsonic: MindsEyeSplinter:
Last I heard, the GOG was actually against releasing them here. Same with Nethergate.
I rally don't get why with Nethergate. o.O
That is odd - any reason (you know of) as to why?
Only reason I can think of is that Nethergate Resurrection has been in number of bundles and for sale as low as 1$/€ on steam numerous times As for Avernum:EftP, iirc, GOG is the only store selling the whole original Avernum series (others only offer the second trilogy, avernum 4 to 6) outside of Spiderwebs' own store so they see no need to offer the remake. GOG may also feel that there is not much interest for the remakes among GOGer's (it wouldn't be the first time for GOG to reject games due to that).
Neither good nor logical reasons imho, but that's just me. I would rebuy them from GOG if offered here but only on steep discount as I own them elsewhere. I would, however, prefer to buy Avernum 2: The Crystal Souls and Avernum 3: Ruined World from here rather than elsewhere but I guess I have to if GOG doesn't change it's stance before release. You can vote for missing SW games
but I don't think it'll have much sway unless we suddenly get hunderds of more votes to push them at least to top 100 most wanted games list.