I welcome the release as well, but am wary of the price. I paid less than $40 for the other boxes on release day from a small independent shop. Assuming this one is the same layout & everything, $65 is an enormous rip-off.
As for the contents, At The Village Vanguard Again! and Expression are certain; how they handle the posthumous releases is something I wonder about. Will they follow vinyl releases or just deal with the titles previously released on CD? If the latter is the case, my guess on the other three are Sun Ship, Transition and Interstellar Space, but Om, First Meditations and Cosmic Music could also be possible?