While nothing is still official, the current word is that a Season 2 is not looking good for Moonlight.
This is coming from E!Online.
Furthermore, Deadline Hollywood Daily is reporting that the show is not on the Fall lineup for CBS. That being said, it is still not canceled (not yet), so the people behind the show are doing everything they can to convince CBS to bring it back for midseason next year.
Stay tuned for more information!