Apple has sent a letter to Internet radio stations requesting they provide cover art for iTunes Radio, reports MacRumors. From the email:
Dear Internet Radio Provider,
Cover Art
The iTunes Store now requires cover art for Internet Radio stations. The cover art files must be 1400 x 1400 pixels in JPG or PNG format using RGB color space. The image URL must end in ".jpg", ".jpeg" or ".png". To add cover art to your station, send an email to itunesradio@apple.com including your contact name, station name and cover art file.
Cover art should avoid pixelation. Any text should be legible at reduced image
