Zahi Hawass on various VoK tombs.
I'd heard about the tunnel in Seti I before. I hadn't heard much speculation on what might be back there other than "I wonder what might be back there?" The linked article says the tunnel "descended" for 100 meters which would probably put it in the underlying Esna shale like Hatchepsut's tomb (KV-20). Which would make it a pretty nasty place. Hawass doesn't seem particularly confident that it leads the the actual burial chamber; if it does go into the Esna formation they probably would have abandoned it for the reasons explained in my old post. So, FWIW, I will make my prediction: Nothing of particular interest will be found down there.
(Link via EEF)