Claiming that it's not waiting until E3 to announce new Wii and Nintendo DS games, Nintendo of America has issued release dates for four upcoming Wii and DS titles.

While the Namco Bandai-developed Mario Super Sluggers was already slated for release in North America, its exact date of arrival was unknown. The other three titles dated in today's press blast had not been confirmed to hit North America.

Wii
• Mario Super Sluggers - August 25
• Wario Land: Shake It! - September 29

Nintendo DS
• Mystery Case Files: MillionHeir - September 8
• Kirby Super Star Ultra - September 29

Read on for more Nintendo-provided details and screenshots... Read more

Nintendo of America today revealed the first details on Mario Super Sluggers (Wii), the latest sports title to star Mario and what Nintendo referred to as "his unpredictable pals."

Much like the Wii Sports baseball mini-game, Sluggers has players literally swinging and pitching with the Wii Remote. However, unlike Wii Sports, it will allow players to charge up power moves with button presses.

According to Nintendo, Mario Super Sluggers will arrive later this year, though no firm release date was provided.

A rebranding of the previously announced Super Mario Stadium Baseball, Sluggers is being developed by Mario Superstar Baseball (GCN) veteran Namco Bandai.