Apple has released iTunes 9.2, which includes support for iPhone 4, iOS 4, iBooks 1.1, and more. According to Apple's release notes, it allows you to:

° Sync with iPhone 4 -- if you can get one, right? -- to enjoy your music, movies, TV shows, books and more on-the-go;

° Sync and read books with an iPhone or iPod touch with iOS 4 and iBooks 1.1;

° Organize and sync PDF documents as books. Read PDFs with iBooks 1.1 on iPad and any iPhone or iPod touch with iOS 4;

° Organize your apps on your iOS 4 home screens into folders using iTunes;

° Perform faster back-ups while syncing an iPhone or iPod touch with iOS 4;

There are also album artwork improvements make artwork appear more quickly when exploring your library. iTunes 9.2 also includes some security fixes for the Windows version.

You can obtain it -- on the Mac -- via the Software Update component of the Systems Preferences app.