yes, then why would boats be in the game, just to travel from a dock to a nather?
i have good news, possibly its not true, look at the first GTA San Andreas trailer, same and shows some actors whit slow music and ONLY IN LOS SANTOS
and the second trailer show more characters whit faster musiccheck them out, ah and also at the end of gta sa's trailer the GTA SA logo fades in and out as the same way as GTA V's logo