Unless Pokemon is going to change their minds/rules about how alternate cards are done, I'm almost thinking that the shiny Pokemon WON'T be alternate art cards.
Hear me out: every alternate art card released so far had the original set symbol and number (albeit with a lower case "a" or "b"). I find it weird, especially from a marketing standpoint, to create a brand new set and then fill it with cards that have different set symbols and numbers. The only way they can be alternate art cards is for Pokemon to break/change the rule they have established already of what makes a card an alternate art card.
But then again, it's Pokemon and they change/break their "established" rules all the time anyway lol.
Also, I've said it before, but I think the secret rare stadiums will be on this set too.