As it turned out, the beta version had quite a few elements that did not make it to release. Presumably, this is a build of the game dating back to September 2020.
The video shows minor differences, such as various silencer models that did not appear on December 10. Other elements are much more noticeable. For instance, the game was originally supposed to feature street vendors who sold random items and could buy all kinds of junk from V.
Also, prior to the premiere, a full 3D-generated map version (Free Look) was available in the game, and the user interface (UI) was more fleshed out. According to the plan, the map was supposed to have icons representing specific locations, and players could view 3D weapon models.
More details in the video:
