My copy arrived yesterday.
Haven't listened all the way through (Roscoe Mitchell's Ride The Wind also arrived yesterday and... wow) but sound is good to my ears, certainly no complaints (i haven't heard previous releases to compare, sorry).
Packaging is typical Japanese-excellent: gatefold mini LP-style, made from quality card stock, comes in a plastic resealable sleeve, CDs are housed safely in 'cloth' sleeves.
Took a couple of pictures. There's a booklet but apart from song titles it's all in Japanese. No mention of remaster from what i can see.
If you're like me and don't/didn't have these recordings, i highly recommend.