This was announced today on the official Cyberpunk 2077 Twitter account. You can find the full message below:
We have important news to share with you pic.twitter.com/qZUaD6IwmMOctober 27, 2020
Unsurprisingly, many are upset about this announcement as they have confirmed that the November 19th release date was the final delay that the game would have. Well, you can see that was not the case.
Despite the game recently "going gold," it looks like the developers need some more time to make sure everything is good to go for all nine versions of the game at launch. With Cyberpunk 2077 being released on all generations of consoles, the game needs to be optimized to perform well on them. This takes time.
Another aspect of the game that they are spending significantly more time on is the "Day 0 Patch." Even though the game has "gone gold" and the physical disk productions have begun, that does not mean that the full game is on those disks. There will be a day 0 patch that will be downloaded on the first launch of the game, completing the game's full installation. They underestimated the time they needed, and thus a 21-day delay was required.
Will this be the final delay? Unsure at this point. All we can do is wait and see!