All the volumes have a theme. Not just whatever Mashima decides to put on the cover spot. So we have two more chapters before the volume ends.
519: Erza's mom
520: Igneel and Natsu
521: Gildarts and Cana?
522: Gray and Ur with the ice shell stuff
523: Natsu and Zeref
524: Irene and Acnologia (mother and son)
525: Zeref and Larcade (and Mavis)
So this volume will be about family...
So 526 and 527 will be about family
One will be August or Acno. Hope the other we will see a Lucy/Layla's moment... cuz why would you give Gray-Ur a moment; Natsu and Igneel; Irene and Erza; and not do Lucy and Layla.
@Emperor Spriggan