Square Enix confirmed in December of last year that Final Fantasy Crystal Chronicles: Echoes of Time would be coming to North America in Spring 2009. Now, they have officially announced that the game will release on the Wii and DS on March 24, 2009.
Echoes of Time will allow up to four users to play online with anyone in the world on either of the two systems. Square Enix was not able to confirm or deny if the trailer for Final Fantasy Crystal Chronicles: Crystal Bearers, included with the Japanese Wii release of Echoes of Time, would be included with the North American version.
The official website for Echoes of Time can be found here. The game has been rated E10+ (Everyone 10 and older) and both version are slated to retail for $39.99.