A silhouette of a new Pokemon has been released in this month's CoroCoro magazine! The Pokemon itself has been named in Japanese as Magiana. Although nothing has been cofirmed by Nintendo, this image coupled with the name suggests Generation 7 games might be on the way.
Credit to Serebii for images and information which you can check out here: http://www.serebii.net/index2.shtml
More info to come.