This was written on Twitter by a user under the nickname teapotuberhacker. The hacker who leaked GTA VI materials to the network had the same nickname.
According to teapotuberhacker, the developers expect to earn $1 billion on GTA VI in the first day.
This information should be treated with skepticism. At least due to the fact that now on Twitter you can see several accounts calling themselves teapotuberhacker. Whether there is the same hacker among them is unknown.