User blog comment:KodachiZero/November 2016 News/@comment-26432452-20161117232514/@comment-26432452-20161118141150

You can use Google Translate on some of the screenshots and info here.

From what I see:

Revamp on home screen, arcana page and maps. You can pick favorit arcana now to put her/him on the home screen.

Bonding and inheritance system. You can use the skill from v1/v2 on v3 arcana.

Lots of bgm and expressions for characters.

Oh, try to finish all the main quest including the sequels for prysma bonus on v3.