The November 21st issue of CoroCoro Ichiban magazine will include a holo Latias promo! An image of the card was revealed in the current issue of the magazine.
The card should be thrown into a future English set.
Thanks goes to JustInBasil for the translation!
Ability: Mist Float
If this Pokémon has any [P] Energy attached, it has no Retreat Cost.
[P][P][C] Psychic Sphere: 100 damage.
Weakness: Darkness (x2)
Resistance: Fighting (-30)