Two Skymibbo dual packs are being released at Gamestop (Disclosure: GameStop is Game Informer’s parent company) on January 9th.
— Amiibo News (@AmiiboNews) December 31, 2015
The first pack contains Donkey Kong, the second contains Bowser. Both figurines come with their own vehicles as well.
Previously the only way you could get these two figurines was to buy Skylanders Super Charger starter kits.