Apple has just made it available in Software Update (Software Update) and on your website the iTunes 10.5.2, the newest version of your jukebox digital.
The update brings several improvements to the iTunes Match which we find today in the Brazilian iTunes Store and corrects an audio distortion problem when playing or importing certain CDs.
ITunes 10.5.2 is available immediately in versions for Mac OS X and Windows.
The Thunderbolt Display Firmware Update is also out now, which corrects a problem with monitor fan noise which affected a small number of users, as well as improving product stability.
The Thunderbolt Display Firmware Update requires Mac OS X 10.6.8 / 10.7.2 or higher and weighs 942KB.
Update
We updated the iTunes Match article with information related to iTunes 10.5.2.