User blog comment:CNBA3/Fairy Tail Half Point./@comment-76.161.172.226-20150727191939

To the best of my knowledge, there's nowhere that Mashima said the series was halfway done. The closest it gets is the volume 35 afterword, where he gives a very rough estimate for the length of what he had in mind.

http://i.imgur.com/8gP8VpC.jpg

Which is not remotely the same as confirming the series as halfway done.