苹果已向开发者发布了iTunes 10.5.1 Beta3，新版本包括对iTunes Match进行几项重要的稳定性和功能完善。苹果在向开发者发送的电子邮件中表示，第三次清除iTunes Match音乐库之后，选择发布iTunes 10.5.1 Beta3。目前该版本为beta版本，仅仅适用于苹果开发者使用。
官方更新内容：
iTunes 10.5.1 beta 3 is now available. This update includes a number of important stability and performance improvements for iTunes Match. iTunes Match stores your music library in iCloud and allows you to enjoy your collection from anywhere, any time, on your iPhone, iPad, iPod touch, computer or Apple TV. In order to subscribe to iTunes Match, or continue using your existing subscription, please upgrade to iTunes 10.5.1 beta 3. Once upgraded, turn on iTunes Match on each of your computers and iOS devices. On your computer, choose Store > Turn on iTunes Match. On your iOS device, tap Settings > Music, then turn on iTunes Match. On your Apple TV, please turn off iTunes Match under Settings > General > iTunes Store. The songs on your computer should not be affected. As always, please backup regularly and do not delete the music you add to iCloud from your computer.
直连下载地址：
iTunes 10.5.1 Beta 3 With iTunes Match (Mac)
iTunes 10.5.1 Beta 3 With iTunes Match (Windows 32 Bit)
iTunes 10.5.1 Beta 3 With iTunes Match (Windows 64 Bit)
