Looks like early developer build.
It was already reported that protagonists will be a criminal couple and female lead will be latina.
City looks like modern day Miami and vice city will be part of it.
You can also greet NPCs like in RDR2.
Female protagonist:
https://streamable.com/s06naz
Here NPC is talking about Jay Norris, he was parody of Zuckerberg in GTA V.
https://streamable.com/m5uesx
Main source of these leaks:
https://gtaforums.com/topic/985481-gta-6-americas-leak-90-mp4-footagevideos/#comments
Archive:
https://archive.is/HpZnH
There are 90 leaked videos/screenshots.
You can download or watch them directly on mega.