The third beta of iTunes 10.5.1 is now available to members of Apple's developer program. The company said it includes "a number of important stability and performance improvements for iTunes Match."
All who are testing the iTunes Match service, which also remains in beta, must update to the latest iTunes 10.5.1 beta in order to continue using the subscription service. The last beta was supplied earlier this month, and brought iTunes Match testing to the Apple TV.
The first beta of iTunes 10.5.1 was supplied to developers in October, soon after the public release of iTunes 10.5. Apple originally promised that iTunes Match would become publicly available by the end of October, but that deadline came and went without comment from the company.
As Apple continues to attempt to work out kinks with iTunes Match, the company once again erased accounts Saturday morning. Developers were notified on Friday that their iTunes Match beta libraries would be erased as Apple continues to prepare for the forthcoming launch of the service.
When it is eventually publicly available, iTunes Match will support music collections of up to 25,000 songs for $24.99 per year. The service will scan users' personal music libraries, including songs obtained from ripped CDs or other locations, and match them up with tracks sold on the iTunes Store.
iTunes Match subscribers will be able to re-download any of their matched songs on other enabled devices, including iPhones and iPads. Those downloads will be 256Kbps AAC files, even if the original user-owned files are of lower quality.