While not expected to come out until 2021, S.T.A.L.K.E.R. 2 was announced not long ago, and dude... my hype... holy fuck I can't wait!

Otherwise, I'm pretty much waiting on Metro.  Maybe Rage 2.  I honestly do a pretty shit job at keeping up with game news and shit.  I played both Undertale and Night in the Woods a year after they were released, AND ruined my experience both times because I watched a let's play before actually buying them.