Quite possible. I heard there was a beta, might be the alpha B or yet another one. Slip of tongue by someone at the Jam though nothing more than it's existence I'm afraid. (even then...)
You would need to go to a BlackBerry 10 Jam session.
Visit BlackBerry 10 Jam World Tour for more information. From what their page says, it looks like Latin American locations will not be given Dev Alphas apparently x_x