That is a shame if they're eliminating this tour. We took it on our last trip in December and loved it.
It is basically a tour on how imagineers created AK. You get a better appreciation of all the little details. For instance, did you know there is a hidden Jafar in AK?
There is a long talk on Asia and how the imagineers took a trip to find inspiration and all the details they brought back with them.
We also got to do an animal talk with one of the animal trainers, and at the end we got back doored onto KS.
I don't really think my descriptions are doing it justice, if you are at all interested in the little details in the parks and how they came about, this tour is amazing.