Apple has released iTunes 10.5.1, and officially launched its iTunes Match music service. Previously made available in beta form to registered iOS developers, iTunes 10.5.1 adds support for iTunes Match, and also offers other performance and stability improvements.
iTunes Match is a $25/year service that matches tracks in a user’s iTunes library with tracks stored on the company’s iTunes Store servers, uploading any tracks it can’t match, and offering users full access to all their music — up to 25,000 tracks — from any of their devices. Apple had planned to launch iTunes Match at the end of October, but delayed the launch for unspecified reasons, while it continued to provide developers with updates to the beta version of iTunes 10.5.1.
iTunes 10.5.1 is available now as a direct download from apple.com/itunes and is expected to appear in Apple’s Software Update utility shortly..