I have posted about this one before, but my thanks to Robert Nielsen for directing me to a magazine article I had not seen in which Hawass says he believes it is a tomb, and possibly that of Ankhesenamun. It's largely confirmation of what has been published before, although I don't recall the reference to meat, but anyway:
This is different to the Cross location and to the ARTP locations, and indeed to all the other locations in the main wadi. I believe that this refers to the Western Valley of the Kings, what is sometimes called the Valley of the Monkeys.
This year began as a banner one for Hawass. Shortly after New Year’s, he revealed that the long-lost tomb of Tutankhamun’s widow, Ankhesenamun, could soon be unearthed. “We recently found some foundation deposits in the western part of the Valley of the Kings, offerings of meat and pottery placed where a new tomb was to be built,” he says. “This is the best location for Ankhesenamun’s tomb, and the fact that no artifacts have been found anywhere else suggests it has never been disturbed.” The discovery of “Mrs. Tut” would no doubt be a worldwide sensation, drawing more attention (and tourist dollars) than any other find, short of another pristine royal tomb.
There is nothing else about KV64 in the article, but if you would like to read it in full, it is a June edition American Way Magazine, from American Airlines.