Board Thread:Young Justice News/@comment-1635895-20130327030726/@comment-432124-20130405025000

TheFlashB03 wrote:

Cari1994 wrote:

TheFlashB03 wrote: How is he dead, he only disappeared. He could be trapped in another dimension or something, I know the Speed Force does not exist. But still it could be another dimension. He disintegrated, just like the League did in "Failsafe". His atoms fell apart due to excess energy. Plus, Greg Weisman explaining why Wally was killed off clearly confirms that he's dead. I know Greg said he 'killed' Wally off because he wanted a death that would hurt, not someone who is only a supporting character, like Barry Allen. However, until it's been officially proven otherwise, I still believe he's alive and that he will come back. (If the series is ever renewed again.)

Greg's confirmation officially proves it otherwise. As the TV Tropes website would say, it's the "Word of God" for the show.