Just like the Apple iOS 4.0 Gold Master, iTunes 9.2 is currently only available to Apple developers. But here's a quick rundown of what's new anyway.
iTunes 9.2 comes with several new features and improvements, including:
• Sync with iPhone 4 to enjoy your favorite music, movies, TV shows, books and more on-the-go
• Sync and read books with iPhone or iPod touch with iPhone OS 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 iPhone OS 4
• Organize your apps on your iPhone OS 4 home screens into folders using iTunes
• Faster back-ups while syncing an iPhone or iPod touch with iPhone OS 4
• Performance improvements make scrolling much faster