I think is Not GTA 6 . If it was GTA 6 his name was GTA 6not "Project Americas".

Or is GTA 6 but his name is hided by Rockstar Games.

This data is Not know if is It real or not. Also 8 DLC were removed from GTA 5. That DLC's were made a half of GTA 5. Also this data is Not know if is It real.

2 days After I Write this:

I forgot to Tell that Lucia actor was discovered. She was on a podcast and a Man from there said This:

-You Worked with Rockstar games???

When the Man said this, she paired frustated and nervous. She said no. When you sign something with Rockstar Games and is unrealesed , if you say a Letter.. You Are dead. Like how the hackers discovered the trailer. Rockstar games said to realese it.