User blog comment:Omega natsu2/Chapter 371: Tartarus Arc, Part 2: Song Of The Heavenly Dragon, Predictions./@comment-3424593-20140211042100

Well guys, the raw title of next chapter says Tenryuu, which is used in spells such as Sky Dragon's Roar. So yeah, next week's chapter is Tartarus Arc, Part 2: Sky Dragon's Song. so it will be about wendy no doubt.