User blog comment:FairyRaven/Fairy Tail Chapter 337: The Golden Plains, Review and Commentary/@comment-4933386-20130628120559/@comment-1776824-20130628123858

Okay, Future Lucy died, and it's already been established in this series that when you die, your soul goes to heaven. Now, given that in Lucy's future Natsu and nearly all of her comrades are dead, why would you not think she's dead? She reunited with them in heaven is all.

If you're referring to the future being changed, you're absolutely wrong. At this point, Rogue will still become evil, and Acnologia will still come in anywhere up to one year's time and kill 90% of humanity anyway. The world is still technically doomed. :/