Still missing various meals at the exit of cyberpunk 2077, but yet CD Project Red has already revealed an estimate on game file size, via PlayStation Store, where it is already possible pre-order the game. The store includes preliminary information on the dimensions that the title should have at the exit, and there is little to say, they are remarkable - Cyberpunk 2077 should occupy at least 80GB.
Of course these are preliminary data. They are subject to change, and from now until April 2020 CD Projekt Red has plenty of time for optimize play and reduce the size of several asset. Nevertheless, given the goals that CD Projekt Red aspires to with this title, it looks like one easy bet predict that the final product will still be of considerable size.
cyberpunk 2077 the April 16 2020 for PC, PS4 and Xbox One.