The abandoned house is intriguing and there may have been some physical evidence he was looking for at that location. But, Cindy's confession to Yuri Malich in Dec. 2008 when Yuri and other detectives were serving a search warrant on the Anthony home, ties Cindy to DC's search of the woods. She said, "I sent someone to search that area (where Caylee's remains were found) last month and nothing was there." Clearly, Cindy was involved in DC's search.
If DC has told authorities the truth, then the real daisy chain may be Casey to Cindy to DC. If DC is the "new witness and new information" source, this could be explosive evidence! It would destroy the defense's claim that "somebody else did it" if the new evidence shows that Casey told Cindy where she left Caylee's body, and Cindy was directing DC where to find Caylee.
Edited to add...............this would be cause for a private meeting between the judge and prosecution. If investigators are still working on this aspect and in the process of verifying what the witness has told them, and if the disclosure of this would hamper further investigation, I could see a reason for withholding this from the defense and the public for a specific period of time. If the new evidence is the "smoking gun", release of that information publicly would taint a future jury pool.