Images of the second Japanese Sun and Moon TCG expansion have now been revealed! Like Collection Sun and Collection Moon, the next expansion will be split up into two smaller sets named Islands Waiting ForYou and Moonlight of Alola. Each sub set will contain 50 cards (not including secrets). The booster pack images feature Tapu Koko and Lycanroc Midnight Form, though other Pokemon can be seen in the background, such as Jangmo-o and Mimikyu.
UPDATE: The set is scheduled to release on March 13, 2017 and will be released alongside a starter deck featuring Tapu Bulu-GX! Additionally, sleeves and a deck box featuring both forms of Lycanroc will be released on the same date.