This set is now listed as pre-order on www.toysrus.ca and will be released on 06/09/2009. The listed price for Canada is $29.99 CAD.
Heres the product description:
LEGO Battles offers a new kind of “build and battle” LEGO gameplay. Through six distinct story lines, players build their own LEGO bases and battle teams as they engage in over 70 different levels, mixing and matching units to create the ultimate customized LEGO squad. These unique LEGO battles teams see pirate swordsmen fighting side-by-side with wizards and aliens; dragons battling ninjas; and pirate ships launching broadsides against spacecraft and knights! Players can also challenge friends on the battlefield in multiplayer mode through wireless DS multi-card play.