i'd honestly be quite surprised if they include zygarde's coding in this demo, i feel like they should have learned their lesson from oras and might have left out the coding for a decent chunk of mons. after finding out the stats, abilities, move tutor moves for all pokemon in the demo data mining for oras i lost all the hype i had for it, so when the actual games game in in 2014 it wasn't about july 2015 that i even got round to facing the elite four (and i still haven't gone flying round on latios to catch legendaries, OR gone round the region looking for mega stones). idk, if they do leave the coding for every pokemon i'll still scour the leaks and all that bc w/e, but i'd just much rather they don't.