A Japanese gaming magazine CoroCoro has leaked ahead of publication and confirms that Game Freak are to add the Fairy/Rock Pokemon Diancie as number 719 in series' roster, GamesRadar reports.
The Pokemon was originally rumoured and found in Pokemon X and Pokemon Y's data and is set to make its debut in the upcoming animated movie titled The Cocoon of Destruction. Two other new Pokemon have also been discovered, Volcanion, and Hoopa bringing to 721 the total number of creatures in the games but it's unknown when they'll be offically revealed.
It's unclear how Nintendo plans to distribute the new Pokemon in the games but they will likely be released at special events like other legendary Pokemon.
You can check out GamesRadar's Pokemon Weekly update on Diancie and get a glimpse of all three Pokemon in the games below.