Siliconera article link
US version will be a digital release at the 3DS eShop while the Europe and Australia version will be a retail release at 26 June this year. A digital release will mean it will be missing the usual 3 free cards that came with the retail version. Hopefully, the price will be much lower than retail to compensate!
It has been so long since the last DS/PSP Yugioh game release that I've pretty much forgot most of the rules and cards...