Moments ago Apple has released iTunes 10.5 beta 8 for registered developers. This release came along side iWorks beta 3 for iOS. iTunes 10.5 beta 8 has been released for Mac users only. If you have the $99 developer account with Apple you can download it right now.
According to the release notes by Apple, iTunes 10.5 beta 8 brings several bug fixes and performance updates for subscribers using iTunes Match beta. iTunes Match was one of several major pillars of Apple’s new iCloud product that was announced at WWDC.
If you are a registered developer with Apple, you can update to iTunes 10.5 beta 8 right now by simply paying a visit to the developer’s portal and downloading iTunes 10.5 beta 8 for your Windows or Mac. However, if you are not a developer and still want to get iTunes 10.5 beta 8, download .zip for Windows (32bit / 64bit) or .dmg for Mac.
Download iTunes 10.5 beta 8 for Mac
Download iTunes 10.5 Beta 8 for Mac with iTunes Match [Link]
Note: iTunes 10.5 beta 8 is not compatible with previous releases of iOS.