One thing, in particular, highlighted in the first round of previews - is the fact this game is a "strictly campaign" affair. In other words - don't expect multiplayer to feature. Here's exactly what Marty Stratton had to say about this ( via Eurogamer ):

Rise of Hydra will likely be two very different games, but Doom could set the stage for one Marvel 1943 mechanic.

Pre-orders for Doom: The Dark Ages are still nowhere to be found at Walmart. But the big retailer is pretty good with making sure every big game of the year it represented, so we're betting it won't be long until the pre-order PS5 and Xbox Series X copies of the game make an appearance.