Apple has lifted restrictions on music bought through their iTunes stores, though it remains to be seen whether music already purchased from iTunes would have its DRM stripped off. This is great news for music buyers, but will create more uncertainty for labels and artists as people will now be able to share music they download more easily.

The agreement with Sony BMG, Universal, and Warner Music will end digital rights management (DRM) software currently attached to iTunes music.

This news comes on the same day that Apple announced plans to revise its pricing structure, offering a new two-tier system.