The announcement was in May 2012. the game released in December 2020. And honestly the hype did more damage to the game then it helped, sure everyone knew C2077 was coming, but that was it imho. Especialy after the 'gameplay' footage from August 2018 that blew most of us away, we all had something like "This is absolutely cool, but the game isn't going to be like this!". The video: And we were right... We knew, but were still disappointed.
Sidenote: I own the game, but still haven't played it (like so many games)...