I was little confused at the cover page, all for the rivals turned reliable allies except for 1, I was confused where referring to Geema, and than I realized "reliable", so I guess that is a shot at Quarto Cerbes. They didn't do anything in this arc.
So Natsu disappearing last chapter, had something to do with Acnologia, okay Hiro I didn't see that coming, so you get a point.
This chapter went by fast and that is a good thing, when you lose track of the page number, that is a good sign of a good chapter.
So I am not surprised we are probably going to see the dragon slayers in possible dragon forms take on Acnologia, they are have been building up for that, though I wasn't if Laxus and Erik were going to be involved.
Anyway Natsu vs Acnologia, this is going to be hype.