Has there been hard evidence of abilities and holding items yet?

I know it seems like a stupid question because those are pretty muchintegral to mega Pokemon, but Legends Arceus had neither. So do we lean to the Pokemon X/Y rules or Legends Arceus ones? I know it kills a lot of people speculation about abilities and people's "hype" for Dragoniteite.

It just seems easier to think it'll be closer to the other Legends game rather than X/Y and I don't know if it's crossed anyone's minds yet.