Pokemon, a new movie has been announced recently, and features a 2nd, darker Ash. Of course, if you take heed of our warnings, you'll realize that all pokemon are darkspawn, and that their corrupting influence makes everyone evil... but that's another issue entirely.
The Phantom Champion Z, 13th movie in the franchise comes from the Diamond/Pearl line. Though it is notable that each Pokemon featured was from the Gold/Silver line. This makes sense when you account for how Japan recently released HeartGold and SoulSIlver remakes of the originals. Oh, yeah, and the Celebi time travels, in case you needed more plot/justification/whatever to let you get excited about getting to see some old faces.
The full trailer follows, filled with poke-splosions, and finishing off with some Ash on Ash action. Hot.