User blog comment:IamJakuhoRaikoben/Chapter 402: Iron Fist of the Fire Dragon, Review./@comment-1359322-20140929144423/@comment-25111584-20140930202309

I actually thought the same thing, but ... if CS is searching for Zeref, they now know that Tartatus is made up of his Demons, so they'd consider it to be their best lead to finding Zeref and a way to defeat him. They don't know that Tartarus is also searching for Zeref. That's why I think that they'll show up. Just my opinion though.

@Nick: You're right. I'll rephrase: I think Jellal will mp die during the Tartarus arc.