This is an important release by apple.It makes iTunes completly ready for the GM release expected to be this Tuesday! For those of you who don’t know, “Golden Master” is the designation given to a developer-only seed that will then be made available to the general public if no major issues are found.
This release comes in after iTunes 10.5 Beta 8, which included enhanced support for the iTunes Match service, was unexpectedly released three weeks ago.
You can Download iTunes 10.5 Beta9 with iTunes Match for Mac HERE
And for Windows Users : Its maybe not out yet,keep checking from time to time =D