It was announced that a brand new Pokemon Anime will run alongside the Pokemon XY series (Generation VI). The series will be called Pokemon: The Origin, which features Red and Green, the main characters from the first Japanese Pokemon games released in 1996 (Pokemon Red & Green), which later released worldwide as Pokemon Red & Blue.
http://www.youtube.com/watch?v=_Lyi2RSVxqg
The trailer features Red as he starts his journey and battles his rival Green, and the Gym Leader Brock. Whether the anime is simply a special series, or the beginning of its own series is unknown. The anime will be based on the video games and will premiere in Japan on October 2.
The seperate Pokemon XY anime series will premiere in Japan on October 17, which ties in with the Pokemon X and Pokemon Y games, which will release worldwide on October 12 on the 3DS