Following yesterdays revealing from Steve Jobs that Apple would lower the price of iTunes Plus tracks, Apple has officially announced that it has expanded the selection and lowered the price.

iTunes Plus now offers over two million tracks. The iTunes Plus catalog is now the largest DRM-free catalog in the world, and includes artists from Sub Pop, Nettwerk, Beggars Group, IODA, The Orchard and many others, along with EMI’s digital catalog.

“iTunes Plus has been incredibly popular with our customers and now we’re making it available at an even more affordable price,” said Eddy Cue, Apple’s vice president of iTunes. “We’re adding over two million tracks from key independent labels in addition to EMI’s digital catalog and look forward to even more labels and artists making their music available on iTunes Plus.”

EMI began offering their catalog on iTunes Plus earlier this year, and their impressive selection has grown to include singles and albums from the Rolling Stones, Pink Floyd, Norah Jones, Frank Sinatra and the solo catalogs of all four Beatles.