• Zygarde is the key character in "Pokemon XY & Z."

Zygarde is the key character in "Pokemon XY & Z." (Photo : Instagram/ashxserena_amourshippingcouple)

Although there is no confirmation from Publisher Nintendo and game creator The Pokémon Company, at least five Legendary Pokémon forms will make their appearance in the upcoming game.

Latest rumor indicate that avid fans may not wait for long for official details about Pokémon installment. According to Express, the upcoming Japanese magazine CoroCoro will have details on the next Pokémon Z titled in its Dec. 15 issue.

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Last month's CoroCoro issue saw fans being treated to a surprise - an appearance of a blue-gemmed Zygarde Core in addition to the December teasers.

While the information is not official confirmed, CoroCoro is reputable for providing hints and details concerning Pokémon updates. As a result, fans are anticipating that the publication will carry something on Pokémon Z upgrades and Pokémon GO release date. Speculation reveal that the December 15 CoroCoro issue may put a smile on the faces of fans.

With regard to the five Legendary Pokémon forms, Zygarde will be central, accessible in different forms. Zygarde will come along with other Legendary Pokémon including Xerneas and Yveltal from the initial X and Y titles.

Meanwhile, teasers have indicated that the other game title - Pokémon GO - will come out in the course of early 2016. Pokémon GO is a new game in the genre, and fans are seemingly looking forward to the game. The new game will be accompanied by Pokémon GO Plus wearable.

Pokémon GO, which will be powered by augmented reality gameplay require gamers to act as trainers themselves. Players are supposed to discover Pokémon in real-world locations.

Watch the clip below for more information on Pokémon Z.