I found this comment: "To all you Manga readers wondering why Jellal's side is getting more story and why Zancrow and Azuma are back, it's because there is going to be extra stuff added into the Tartaros arc for the anime. Before you sigh about filler, it's not filler. Hiro Mashima wrote in the 'afterthoughts' sections after the Tartaros arc ended in the manga that it was supposed to be even longer, but unfortunately some stuff had to be cut out, such as more side story stuff and 3 new villains. The good thing is that the stuff which got cut out in the Manga is being added into the Anime, therefore we have new canon material coming up. Hopefully this cleared up any confusion for you Manga readers as to why stuff you don't remember was showing up at the end of the episode and in the preview for the next."
Can somebody confirm this?