On the Apple iTunes store the text reads "This is a special offer to upgrade your entire music library of previously purchased songs, albums and music videos now available in iTunes plus. You will be charged $0.30 a song, 30% of the current album price and $0.60 a music video to upgrade. Just click buy now and new versions of all your music below will be downloaded in iTunes Plus. This page updates automatically as we add more music in iTunes Plus. Please check back often!"
Tracks should sell for 69Â¢, 99Â¢, and $1.29 -- depending on their demand.
In a separate announcement, iPhone users are now able to purchase music from the iTunes store via 3G. Previously users could only download music on a Wi-Fi network.
Image courtesy of Engadget