Apple has posted four software updates so as to reflect iTunes store announcements made during MacWorld SF. The updates also fix some bugs.

iTunes 7.6 - 44.7MB

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.

QuickTime 7.4 - 57.9MB

QuickTime 7.4 addresses security issues and delivers:

For detailed information on the security content of this update, please visit this website: http://www.info.apple.com/kbnum/n61798.

iMovie Update 7.1.1 - 16.9MB

This update addresses issues when publishing movies to a .Mac Web Gallery, improves overall stability, and addresses a number of other minor issues.

Front Row Update 2.1.2

This Front Row update provides for bug fixes and improved iTunes compatibility.

All the updates are available either through the Software Update utility or through Apple's support web site.