2017, maybe, honestly I prefer a "done when it's done" than an official release date, less frustration, less pressure for the devs.
AvengerGrim.. I am honestly glad to have been sharing this same boat with you.
[. Even though it's been 6 months since then, I don't expect release until 2017, probably more like 2018.
Work is already being done, even when The Witcher 3 is not yet released. Keep in mind they were - are? - prototyping and shifting people back and forth between projects. They were looking (and probably found) people to work on some aspects of Cyberpunk 2077. You don't do that needlessly. I think we can realistically expect game to be out sooner than people think, but we will have to wait for news after their flagship project is finished and dust settles.