I'm not anticipating Mexico, but it certainly wouldn't surprise me. In a city based on LA, anything drug-related in the game is going to tie into Mexican cartels. That doesn't mean that we'll see Mexico or that we should expect to see it, but it's plausible.
There there, it's alright. *Pats back*
I'm sure there are plenty of noobs who are too focused on "ZOMG NEW SCREENSHOTS" to look in other topics, so to them, this info came from you first.