It is not clear whether the two new accusers will appear at the hearing.
Dottie Sandusky, however, will likely be called to testify at the hearing or at the later trial, despite exemptions usually given to spouses in court, according to ABC News legal analyst Dan Abrams.
"She's probably not (facing charges), but there are some interesting questions about spousal privilege," Abrams said. "Typically when a spouse confides in another spouse, that person can't be forced to testify. But she was actually a witness in the context of a very serious alleged crime. Consequently I think she would be forced to testify."
Dottie Sandusky was not able to be reached for this story. The attorney representing her husband, Joe Amendola, did not return calls for comment.