Cyberpunk 2077's Update 2.0 - which adds new skill trees and perks, vehicle combat, and revamped police responses to the FPS-RPG - will launch on September 21st. That's a little before the release of the paid expansion, Phantom Liberty, on September 26th.
The release date was announced today as part of a developer stream, which also included a new cinematic trailer for the expansion featuring a little of Idris Elba's character before the events of the game.