Rumors in the Lilith community suggest this final box includes minor scenario touch-ups and re-recorded audio for specific scenes that were previously compressed. While not a remake, it is the most polished audio experience available.
Anime Lilith has labeled this the last physical release for the franchise. Given the studio's shift toward mobile titles ( Sengoku Rance style gacha) and shorter-form doujin games, this box serves as a museum piece. If you want the complete Kangoku Senkan narrative without hunting for outdated DVDs, this is your only stop. Kangoku Senkan Premium Box -Final- -Anime Lilith-