It'll finally be Legal. Oh, we will also get Reckless Emboar and Shell Armor Samurott.

Notes:

"It has been announced that there will be several special distributions of the Unova Starters in Japan. These distributions are unique in that they offer these starters with their Hidden Abilities. They will be distributed through Serial Code. On December 28th, a code for Serperior with Contrary will be given on Pokémon Get☆TV and can be redeemed from January 9th to November 30th. This Serperior has the moves Leaf Storm, Hold Back, Wring Out & Giga Drain. " – Serebii