She's doing it through Brave Wave, so it'll probably be released worldwide digitally through Bandcamp:
http://www.bravewave.net/blog/2015/a...g-terra-magica. She says the album jacket's going to be done by Panzer Dragoon designer Manabu Kusunoki so it sounds like there will be physical copies.
Additional info from the blog post:
Guest remixers: Michiru Yamane, Takahiro Izutani
Guest vocals: Eri Itoh
Chorus: Yumiko Takahashi
Neat that we have a release date!