Apple announced that EMI Music’s entire digital catalog of music will be available for purchase DRM-free (without digital rights management) from iTunes worldwide in May. DRM-free tracks from EMI will be offered at higher quality 256 kbps AAC encoding for $1.29 per song. In addition, iTunes customers will be able to easily upgrade their entire library of all previously purchased EMI content to the higher quality DRM-free versions for just 30 cents a song. iTunes will continue to offer its entire catalog in the same versions as today—128 kbps AAC encoding with DRM—at the same price of 99 cents per song, alongside DRM-free higher quality versions when available.

“We are going to give iTunes customers a choice—the current versions of our songs for the same 99 cent price, or new DRM-free versions of the same songs with even higher audio quality and the security of interoperability for just 30 cents more,” said Steve Jobs, Apple’s CEO. “We think our customers are going to love this, and we expect to offer more than half of the songs on iTunes in DRM-free versions by the end of this year.”

Thank goodness it’s April 2, not April 1st.