Apple has released iTunes 7.6, which features support for iTunes Movie rentals, tweaks for the iPhone/iPod models and new Apple TV and more. The description from Software Update reads:
"Rent and download your favorite movies with iTunes on your computer or directly to your living room on Apple TV. Enjoy rented movies in sizes up to 720p HD with surround sound on your Apple TV and sizes up to DVD-quality on your computer. Transfer your rented movies from iTunes to your iPod or iPhone and enjoy them on the go.
"Also, purchase and download your favorite TV shows, music, and more directly on your Apple TV. Effortlessly transfer purchases made on Apple TV back to your computer with iTunes."
Another major enhancement in this release: Windows Vista 64-bit support. This means Vista 64-bit users finally have an official method for synchronizing the iPhone.
The new release is currently available through Software Update or the iTunes download page.