There are a number of law enforcement agencies involved in this case. APD is primary, it's their jurisdiction. They're not naming a suspect, and seemed to be pretty testy about the release of dad as a named suspect. Press says they have two LE sources, but no one said they were with APD.
I suspect (nothing but an educated guess) that this info was released by another agency's personnel, and that APD maybe didn't want it released to keep JM 'happy', possibly to keep him talking, especially if they haven't been given the location of V's body (or of her whereabouts if she's alive but I sadly don't think so).
As far as I know he hasn't made bond on the other charges.