Info on 6.4 main story and raid from a recent interview (translated with google translate).
https://www.famitsu.com/news/202305/01301188.html
Main Story
We decided to consider this patch 6.4 and the next patch 6.5 as paired titles. In patch 6.4, the "throne" that Golbeza has sat on so far has been laid out straight, and we have presented in an easy-to-understand manner what the "criminal" refers to, what actions correspond to it, and future developments. After clearing patch 6.4, I think it would be interesting to reconsider its meaning. I think we'll start to see faint hints of what will happen after the patch 6.X series, but I don't think we can predict it yet (laughs).
Raid Story
As the story is finally reaching its climax, I have collected all the foreshadowing that has been stretched around, both big and small. I wonder if it will be there as a highlight. In a sense, the 6.0 main quest was intentionally left untouched, so I think you can enjoy it as a 6.0 after story. As a battle, it's the final chapter, so we're aiming for content that's as crunchy as the "Pandemonium" series..
EDIT: Audrey's translation of the sumarry of various interviews Yoshi-P gave regarding 6.4
https://twitter.com/aitaikimochi/sta...01081083707393