Naraku_Diabolos on 12 April 2009
http://www.serebii.net/index2.shtml
On Saturday's annoucement.
Japanese gamers will get a Shiny Pichu prior to the release of the 12th Pokemon movie, which has the moves Charm, Endeavor, Volt Tackle and Charge. When the 12th movie is released, they will get an Arceus at Lv100 in a Cherish Ball, with the moves Judgment, Roar of Time, Spacial Rend, and Shadow Force; the exclusive moves of Dialga, Palkia, and Giratina.
I guess us American, European and Australian gamers will have to wait for this 
