User blog comment:Miskos3/Fairy Tail Episode 180: Garou Knights, Review/@comment-5598380-20140504131110/@comment-76.161.172.226-20140505174249

Actually, the next set of episode titles is out:

http://i.imgur.com/Em3fJo9.jpg

181 has chapter 308's title 182 has chapter 309's title 183 has chapter 310's title 184 has chapter 311's title

So we're looking at anywhere from 3 to 4.5 chapters covered by the next 4 episodes.