Oz the Reflection reached final episode

Episode 18 is last episode and will add Epilogue in last volume.
Side:Orpheus will end on next month (Episode 19), and will add Epilogue in volume?

New volume released only been 3 months since 3&4 volume releases.
Side:Orpheus website no any updates since July 31 of the previous year.
Will release 2&3 volumes at epilogue?

Retconned characters (Just like fan service):
First: Marika Soresi (Episode 14)
Second: Carine ne Britannia (Episode 18)

Epilogue:
Survived imperial family: Nunnally, Cornelia, Schneizel, Carine, Laila, Marrybell (?)
IDK Marrybell would survived.