>>10514209They did that to hype up the Battle Hour event. I wouldn't put too much stock into that particular statement as they also said they'd reveal the no.2 and 3 from this "poll" they did. Never happened.
Not that it really matters, all the missing characters are popular enough that they'd be made eventually either way. As always, the surveys will show you what's to come in the coming years. GT Goku, Pan and Trunks have been on there for a few years now.