CD Projekt Red hasn't said much about Cyberpunk 2077 since their initial announcement—which seems to be what they do, i.e. The Witcher 3—but they did confirm that the game will have a multiplayer component.
In an interview with Eurogamer, CD Projekt Red's managing director, Adam Badowski, said, "[Cyberpunk 2077] will be a story-based RPG experience with amazing single-player playthroughs, but we're going to add multiplayer features."
For the record, he also hinted that there might be multiplayer for The Witcher 3 as well, which is an interesting concept. I'll have to reserve judgment until after I hear more on what that could possibly entail.
Did you miss the original teaser trailer for Cyberpunk 2077? Check it out below.