These chapters have been quite a mountain ride, with Natsu's true nature yet to be revealed

http://www.mymangamarathon.com/2016/01/fairy-tail-anime-sch edule-january-2016-news-manga-spoilers.html

I see that a fight between Natsu and Acnologia is near, who knows.

But since next arc is about Lucy, this could be delayed. Unless there's a twist about Lucy's powers.