4:28 PM PT -- The Beverly Hills Police Department, the investigating agency for the Menendez brothers case, tells TMZ ... cops presented facts and evidence to the L.A. County D.A.'s Office back in the day when prosecutors filed criminal charges, and BHDP has NOT been contacted by the D.A. regarding these new developments.

2:52 PM PT -- The L.A. County D.A. just said they are reviewing the claims of Erik and Lyle Menendez that they were molested by the father they killed, and he will decide if they should get a new trial or if the D.A. should go for a new sentence -- presumably manslaughter -- that could set them free.

George Gascón said his office is aware of the new claims by a former member of the band Menudo -- who says Jose Menendez molested him. That's highly relevant, because it goes to whether the judge in the second trial erred by not allowing evidence in that Jose allegedly molested his sons.

A hearing is scheduled for November 29.

The L.A. County District Attorney is about to make an announcement about the Menendez brothers, who have been in prison for the murder of their parents for nearly 35 years.

The brothers -- Erik and Lyle -- have filed a petition, asking that their convictions be overturned because the judge in the second trial refused to allow in testimony Jose Menendez allegedly molested both of his sons.

A former member of the band Menudo has come forward alleging Jose, who was an exec in the music business, molested him. This opened the door for an appeal on the grounds critical evidence was not admitted.

Best case scenario for the brothers -- if they get a retrial and a jury finds they are guilty of voluntary manslaughter and not murder, they would be instantly free men because they would have served more than the maximum sentence.

The news conference is set for 2:30 PM and we are live streaming.