I smell a... wumpus!?
Massive video that quickly jumps to the announcement trailer then gets into a lot of detail about what's happening in X4.
So Egosoft is taking what they've learned with Rebirth and making a game more like X3 with it. Heavily improved base building. Fly capital ships, even though they steer like cows. Be able to walk around in the ship while it flies (your pilot will quickly take over). Very map-based interface.
Looks like the NPCs look the same as in Rebirth at this point. No Borons at all yet. They're… fish. Kinda hard to have them wander around a space station or for you to go into one of their stations.
Sounds like a VR version is likely but it will be another game. Interface and frame rate demands are so different, they don't want to do the least common denominator thing on them.
Fast transport will be by simple driving (SETA is in again), highways for short range moving, gates for long range, and a new thing: teleporting. Once you research it, you can teleport between any ship you own! Sounds like that replaces the hyper jump, though we'll have to see for sure.
Oh, and better graphics. It's a computer game, after all.
Likely out next year. They don't know about Early Access. Ugh. Egosoft needs Early Access more than any company I know.