User blog comment:Miskos3/Fairy Tail 525: Why Did the Emperor Never Love His Child?, Review/@comment-29876114-20170305094156/@comment-84.151.142.173-20170307045638

Nope. Alvarez Empire arc is confirmed to be the last in the movie trailer.

Tartaros arc is similar to the BG arc. Both are referred as "Hell"/"Doom" or similar, their members have animal features and many members either die or their fates are left hanging with few exeptions.