So i was reading up on PokeBeach and i found an article about a new Pokemon Set! This new one is named 'Bandit Ring' and is set to be released in Japan in June 2015.
There is a list of Pokemon which can be seen on the Box and Adverts which are presumed to be included in the new unreleased set.
Latios, Latias, Dialga, Regigigas, Arceus, Reshiram, Black Kyurem, Hoopa, and Pikachu
For more information you can read the PokeBeach Article i found through the Link down below.