I think GOG removed the Upcoming list because it was never very accurate. Half the games they released never actually appeared on the upcoming list first. Although that's only a guess.
The reason was testing -- some games took days to get working, others months. They decided they'd rather surprise people than have them waiting in agony for potentially months at a time..:)
I like it, too.
As for a promo, no word, but I'm going to bet on one for shooters.