Yeah I can't provide any details but I do recall reading a blurb about this on their, Important Records that is, Twitter account I think. Have all these on LP at the moment, and my understanding was that these were to be on CD. Would be nice to have 4 on LP I agree. This was a couple of months ago and it wasn't clear to me if this was going to a comprehensive reissue campaign or what. If someone out there reading this is in touch with the owner of Important they could perhaps drop him/ her a line and get some more details. Regardless, if this does in fact happen I'm sure Important will do a nice job with it.
Anyway, my review of "Frontera" is that it is a good one, better than the live debut for sure, and like most things surrounding Overhang Party/ Fukuoka Rinji will be generally underrated/ overlooked alas.