That would be one Hell of a secret since "The Final Chapters" came out everywhere else in world about two years ago. It had a TV release, and DVD/bluray release. All with an English Dub. I don't believe Funimation and Toei would sink two years of profits just to air first on Toonami. Especially since Super has now come to America, but in a subbed-only format. The evidence points to Funimation and Toei having some sort of fallout. If true, it's a blow to Funimation since in the past, they have come out and said that DBZ is so popular that it's sales supports other anime that Funimation works on.
And it won't go right into season 2 of Gundum since a season 2 was only just announced a couple of months ago. And I said, announced. Not playing. They still have to make the thing.