Ancient Mew Promo:
Well I guess that means they don't plan on remaking Pokemon 2000: The Power of One if they're giving away the Ancient Mew Card for this movie.
"Deciphering the ancient script will reveal something shocking about "that ability""... what? What script are they talking about? The only script that isn't related to the TCG is the two lines below the attack. The first one says "New Species", which is Mew's official Species in the game.
The second line is more interesting: "Little god... or evil?" (though Nintedo's "official" translation of the card says its "Little cat... or evil?", lol). Certainly an ominous description or maybe even warning, but still nothing relating to what you can call an ability.
Finally there are the hieroglyphs behind it but those were also explains to mean "Birth", "Enthronement", "Right of Succession" and "Death". Interesting as well, but also nothing really relating to an ability unless they're applying Mew can control some kind of life cycle or maybe has the power of reincarnation.
Armored Mewtwo:
Huh, so they did change it. Hmm, I don't know, I kind of like the older one as it looked much sleeker. This one is a bit too busy with the over the shoulder covers and the samurai-like spike ornaments in the back. It looks more cumbersome and would more hold Mewtwo back then the original armor's purpose of just focusing its power.
Eitherway, may not be in the games (please let it not be in the games), but you definitely know there's going to be ton of merchandise of it with at least one being a figurine/action figure. Maybe also a Funko Pop.