It's ironic. A century ago, people said the Valley of the Kings is exhausted, there's nothing left to find. Suddenly Carter found Tutankhamen. So then they said, now there's nothing to find. Then we found KV5. Now we have KV63. I wouldn't be surprised if we find more.

It clearly proves the Valley of the Kings is still not exhausted.

The objects in the tomb don't necessarily date to the original tomb. The objects could be 200 to 400 years later than the original cutting of the tomb.

It could be the tomb of a king's wife or son, or of a priest or court official.

I wouldn't be surprised if we discover more tombs in the next 10 years. For a long time, people thought there was nothing left to find and excavations seemed unlikely to produce much. So instead, they concentrated on recording what was already there.