That’s what I heard back when Super was first announced, but if it was ever true at all, then the idea of fitting it there has probably since been abandoned. Honestly, Dragon Ball from Z onwards is a series of paper-thin justifications for THE NEW STRONGEST BEING EVER to show up, kick ass, and then get surpassed after Goku and Vegeta do EVEN MORE TRAINING. It’s not exactly long on plot, stakes, or world building.