Rumor on the Rick Roberts show before Danielle's body was found--probably from the same source that let us know the naughty parts.
Early on, there was a lot urgency in the search. That tapered off--until just after the kiddie porn was removed from DW's house, and then it was absolutely imperative that Danielle's body be found. A couple days later, this report surfaced, which explained the urgency.
SW, there was a RUMOR that during the hours of grilling by detectives, that DW said he could provide them with the possible location of the body,(and here there are 2 endings to the rumor)
(1)if they would make a deal.
(2)If they would let him contact a lawyer before doing so.
My guess is pure internet hype.