The "when its ready" message shows that CD Projekt Red wants to get this game right. The creator of Cyberpunk 2020, Mike Pondsmith will be working side by side with the dev team to really translate the world he built. With gameplay, it's still a mystery, but the team did mention that the game will be a sandbox RPG with a combat system very similar to the pen-and-paper version.
Can't wait to see more about Cyberpunk 2077. It's a great setting and hopefully we see more of it in the coming months. Don't hold your breathe, because I have a feeling this game will take a couple of years until it gets released.
If you want to find out more, you can check out their official site.