Watch Dogs: Legion was released in October and initially the idea was that the multiplayer part would be released later this year. Ubisoft has now announced that we will not see a multiplayer release this year, but instead aim for a release early next year. Ubisoft announces that the delay is due to the developers needing more time to fix the single-player experience so that people can enjoy the game as intended. They write this:

Since the launch of Watch Dogs: Legion, some of you continue to have technical issues preventing you from enjoying the game. The dev team is committed to fixing these issues and will not stop until everyone can experience the game as intended. As an immediate next step, this week, we are releasing Update 2.20 to PC, PlayStation, Xbox, and Stadia. The update will add a manual Save Game button to PC, as well as bring further stability improvements for Xbox One, Xbox Series X | S, and PlayStation 4. You can find the full list of patch notes here.