Doom 64 was confirmed for PC and dated for March 20, 2020 a couple of weeks ago, but you may have missed it because it came along with the news that Doom Eternal is delayed into 2020. So here's a reminder, in the form of the official announcement trailer.
It's not the announcement trailer, really, because Doom 64 was released in 1997 for the Nintendo 64. But it never came to PC (or any other platform, for that matter) and while the original Doom of course did, the 64 version was enhanced in a number of pretty significant ways, including better graphics, new levels, and a new weapon.
The visual improvements are obvious in the trailer, but it's still very old-school Doom, and I do wonder whether there's enough "newness" there to make it interesting at a time when we have all sorts of Doom mods as well as new (and very good) retro-styled shooters to choose from, such as Dusk, Amid Evil, and Ion Fury. Games like Blood: Fresh Supply prove that new games can successfully retread the '90s, and while I'm eager to give Doom 64 a go, my curiosity right now is more anthropological than anything else. Maybe that'll change once I've got my hands on the super shotgun again.
Doom 64 will be free with all preorders of Doom Eternal. Standalone pricing hasn't been announced.