Here is what TechRadar said
The game is billed as a prequel to the modern Doom series, which includes 2016's Doom and Doom Eternal. It will focus on the origins of the enigmatic Slayer and feature a never-before-seen medieval war against hell. Judging from everything shown in the trailer, it looks like a pretty radical departure from the more futuristic, sci-fi look other the other games.
Like the two previous installments, Doom: The Dark Ages is being developed by id Software and is powered by the idTech game engine.
A recent post from the official Doom X / Twitter account has also confirmed that the game will be available as part of an Xbox Game Pass subscription. It will be launching for Xbox Series X, Xbox Series S, PC and, rather surprisingly, PlayStation 5.
Here are some other articles about it but I imagine most of the information is the same:
What do you think? Do you believe it will play similar to DOOM Eternal?
Or just do something actually interesting with the story instead of just having "deep lore." 2016 had so many great ideas - a robot CEO that reluctantly needs to work with a guy who will not hesitate to destroy everything he's built, an AI that has to instruct you on how to destroy it, etc.. Its ideas were so fun and embedded well into the gameplay and objectives.