Some new info from the article:
BFG and Chainsaw aren't on the weapon wheel since they're used in specific scenarios, Chainsaw is on D-Pad down and BFG is on X. Seems like they're treating the BFG as a panic button.
Weapons have mods you can find, ex. a remote detonation mod for the rocket launcher
Plot premise seems similar to Doom 3. A character named Dr. Olivia Pierce appears on a video suggesting she unleashed the demons as some kind of religious cult thing.
On-screen enemy count isn't numbered but described as "a demon avalanche", "bloodbath"
Chainsaw is a one hit kill on most enemies, multiple on bigger enemies like the Mancubus, power cells are limited
Colored keycards and backtracking for secrets. WOW!!!!!!!!!!!!!!
Some locations: Lazarus Facility, Martian surface, Titan's Realm (as seen on the cover)
Permanent character upgrades that allow you to swap weapons and mantle more quickly, increase ammo and health capacity
Swappable perk "runes", ex. one gives you a stackable temp speed boost after melee kills
Hell is more vertical than the UAC facility
Enemies have weak point, ex. the pinky demon is armored in front and soft in the butt
An enemy type only described as "a summoner"
As suspected, idTech 6 appears to be very similar to idTech 5 but with a completely new PBR renderer
Plans to offer "sliders and multi-sampling options" for PC players. Only time in the article PC is mentioned specifically.
Multiplayer mode called Warpath, an domination style mode where the control area drifts around the map
Clan Arena mode, this is just team Last Man Standing.
Swappable "hack modules" are earned through MP progression, ex. Supply Timer that shows spawn timers for pickups on screen. Apparently none of them throw off the competitive balance.
Apparently multiplayer has more guns than single player, including a "lightning gun", this might be GI assuming based on what was offered in the demo portions though.
Namedrops of old Doom WADs followed by statement implying that they won't be releasing mod tools outside of SnapMap because of accessibility consoles. seems like kind of a big fuck you.
Examples of modes made in SnapMap: tower defense, moddy single-player missions, VIP escorts, racing challenges
Moddable enemy AI to some extent
SnapMap stuff is all shared on SmartHub, categories like top rated and most played, user profiles, seems a lot like Mario Maker
All SnapMap creations are small instruction files, you can probably forget about custom textures and rooms and whatnot
Still spring release date