At first I felt insulted, and then I realized I should expect it by now.
My advice if you have the earlier boxed set already: don't buy anything until the Blu-ray comes out. As Obi-Wan would say, "This is not the Indy set you're looking for." I know there's also a boxed set of these new releases coming out, but Amazon lists it as a 3-disc set... hence, no extra disc with supplementaries even there. Just hold off for the inevitable Blu-ray release, and watch your 4-disc Indy set in the meantime.
And move along, move along.
--SKot