In case anyone's confused, this is NOT a conclusion OR a continuation of the anime series (+ a brief explanation of what it actually is)

UhOhSPAGET said:
As someone who's seen both versions in cinema, just though I'd put this out there in case anyone's confused as to what this movie actually is. 

This movie has nothing to do with the anime series, rather, it's two movies (labelled as Day 1 and Day 2, both of which are essentially the same but with slightly different setlists and mc sections in the first half) that are presented to feel like an actual live show. Improved 3D models and motion capture are used throughout the performance and there're even live-like moments of audience participation (some screenings in Japan even allowed people to bring penlights and merch into the cinema). 

There're no spoilers for the anime in these movies (except for maybe the existence of ZOOL but idk if that counts lol), but if you have seen the anime, you'll be able to spot some subtle but endearing nods to the story, particularly in the final song. 

All in all, while it's not a story continuation by any means, it's still an extremely fun and mayhaps even a little emotional at times live experience that both i7 game and anime fans alike will enjoy :)