I sincerely hope you are right. I am going to be extremely disappointed with Game Freak and Nintendo if we don't get the new Zygarde forms after all the time they've spent hyping it up through the anime, TCG and spin-off games. If not, then by the time they do release it all the hype is going to be dead... so what would have been the point of it all to begin with?
Anyways, Pokemon Pearl version was my first game and I am going to pick both Rowlett and Litten since I plan on getting both games. I'm honestly not excited for these games as much as I was for X and Y, considering how easy it was to complete those games and the lack of content to play with after you finished the end-game - and I fear that Sun and Moon will end up being the same.
I'm hoping to get both when they come out, but I'll be fine with either, preferably moon. That game's legendary Pokemon looks way cooler than Sun's. It's just a sparkly male Pyroar.