There's obviously nothing new in the case and not likely to be unless Elizabeth is found or her body is found. If her body is stumbled across it will probably be meaningless unless the mud or foliage in the area is tied to evidence from the Jeep which will only be made public to further implicate Ricci, who I believe was an accomplice and possibly involved with what ultimately happened to Elizabeth, but not the person that took her from her bedroom.
Since there's nothing new to discuss I'll just reiterate my view that the SLCPD has known who the kidnapper is since the early days of the case so I don't think they've needed to listen for any street talk other than know what's being said to CTB. By the fact they haven't charged the kidnapper I believe they have no plan to and probably have political reasons for not wanting his identity known, maybe someone who shouldn't have been on the streets and no longer is, maybe because of who he might have been working for. I doubt they could have kept this from the FBI so any hope in the FBI cracking the case is in my view leaning on a reed. I'm sure the family is not involved and don't believe LE is protecting a sexual pervert who is a neighbor, a prominant member of the community, or a Mormon cleric. There could be people the kidnappers worked for, such as organized crime, but there has been no information released by LE to lead to any educated speculations.