Hello Citizens of Brittania!
As you may or may not be aware, for the last few days Disney XD (who currently air "Pokémon DP: Battle Dimension") have announced that starting on an as-of-yet unspecified date in May, they will be airing the long-awaited series "Pokémon DP: Galactic Battles", which began airing in both Japan and the United States following the release of "Pokémon Platinum" in September 2008, and March 2009 respectively.
"Pokémon DP: Galactic Battles" is the third season in the "Pokémon Diamond & Pearl" series, beginning with episode 105 (571st episode of "Pokémon" overall) "Get your Rotom Running!" and is speculated to end with episode 156 (622nd episode overall) "A Meteoric Rise to Excellence!".