Nintendo just announced a completely brand new Pokemon that will be gracing your 3DS sometime next year. Volcanion won't be attainable through regular means, which means it will most likely be distributed via their online services.
Volcanion is a unique Pokemon as it harnesses the powers of both Fire and Water elements, making it the first to use two clashing elements at a time, thus creating Steam.
According to their description "The power is said to be great enough to blow away an entire mountain, gouging out the earth and changing the shape of the land. " Sounds pretty powerful. But what new Pokemon isn't these days.
Nintendo will announce distribution of Volcanion in 2016.