I'm sure they just haven't put up new information for this summer's camp. I went to the one in Lawrence two years ago when I was still in Kansas and had a great time.
I'd suggest just calling Monty Applebee at
the contact info here and let him know you're interested. Monty is a good guy and will let you know what you need to be on the lookout for.
They have had three camps before, one of which is just for current staff and invitees, and then two that are open. One of those is typically in Lawrence the other in Hutchinson or Wichita.
Let me know if you have other questions!