Pre-orders and previews begin April 10, launches April 24.
More Purported iTunes 9 Screenshots Surface [Updated]
MacRumors has been unable to confirm the authenticity of the supposed screenshots, but the same source has now provided additional screenshots to Boy Genius Report, revealing an iTunes version number of "9.0b15 (12)".
Image from Boy Genius Report
Image submitted to MacRumors
Update: We have good reason to believe these screenshots are fake.