The 719th Pokémon has just been revealed. It's called Diancie and is a Rock and Fairy-type monster.
The cute little creature was revealed in the latest issue of Japanese magazine CoroCoro (via Serebii). While Diancie isn't currently available in Pokémon X & Y, it'll be making its grand debut in the series' next movie, dubbed Cocoon of Destruction and Diancie.
The movie will hit theaters in Japan on July 19th. No word on a western release... yet.