Madonna will celebrate her new album, “Hard Candy,” with an intimate April 30 show at New York’s Roseland Ballroom. The performance will be cybercast live on MSN Music in Concert in the U.S. and on May 15 internationally.

The performance will come a day after the U.S. release of “Hard Candy,” the first single from which, “4 Minutes” featuring Justin Timberlake, is already No. 3 on the Billboard Hot 100. It is unknown if Timberlake or producer Timbaland, who also contributes to the album, will appear at the New York show.

In other Madonna news, the artist’s Icon fan club has relaunched with a social networking component, dubbed Icon Social. Registration is free, but a “platinum” membership runs $40, and includes members-only contests, ticket presales and other exclusive items.