It appears the original intention was to release a complete album at M3-17, but the album wasn't finished in time. So this was released as a 2-track preview.
Another album called neutral. - OdiakeS Sound Sketch - sono 2 M3-22 Version. was released at M3-22 containing an additional two tracks.
Link here:
https://vgmdb.net/album/108741
A third album called neutral. - OdiakeS Sound Sketch - sono 3 M3-25 Version. was released at M3-25 with yet another two tracks.
Link here:
https://vgmdb.net/album/108742
We can't find any record of the completed album actually being released.
According to the following link, the catalog number for the album was intended to be SJVSC-0017, but I'm not positive that number was attached to this first 2-track preview album or not. I'm leaving it on there for now.
https://web.archive.org/web/20070728...sjv/disco.html