That would be nice if he did, but so far, nothing has hinted anything about that. The thing is, was he killed shortly after he found the necklace? Sirius said he only lived three days after he tried to quit the Death Eaters. Or, is there a chance he could still be alive and helping Dumbledore? (Remember what Dumbledore told Malfoy when he had him trapped before Snape came for the answer to how this could happen!) Is RAB still alive and searching for the remaining Horcruzes? As to what happens to the horcruxes, any remaining will be found by Harry and perhapes those helping him. I wonder if Voldemort somehow manages to get into Hogwarts to steal the Gryffindore sword in Book 7? SO many questions and too little answers, yet!