GameStop is listing Dragon Ball Origins 2 (the domestic release of Dragon Ball DS 2) as coming out 22 June 2010, a date that has not yet been formally revealed by Namco-Bandai, themselves. The game is set at the expected $29.99 price point. GameStop also has cover art for the game, which is identical to the original Japanese release (with the obvious exception of the title change):

I would expect to hear more from Namco-Bandai in the coming days — we are two months off from release on this one, supposedly.