User blog comment:Miskos3/Fairy Tail Launches 'Shocking' Project Next Spring/@comment-7418318-20131130132026

That means either that they'll leave some more episodes out of Fairy Tail Best, that their definition of "spring" is different than mine or that it's something else entirely.

I think the first two are the more likely ones.

While a series of short spinn-offs delving deeper into ancient lore, character's past and background and such things would be cool, I don't really expect something like that to be made before the series ended.