iTunes 7.1 adds support for the Apple TV and also supports a new full screen Cover Flow and improved sorting options.
QuickTime 7.1.5 delivers numerous bug fixes and addresses critical security issues.

http://www.apple.com/support/downloads/

iTunes 7.1 and QuickTime 7.1.5 are available for Mac OS X (10.3.9 & 10.4.8) and Windows 2000 (SP4)/XP (SP2)

Other updates from previous weeks:

Backup 3.1.1 – 5.5MB
Significant areas addressed are backup and restore with external drives, memory management, and restore of bundled file types.
03.01.2007
DVD Studio Pro 4.1.2 – 9.9MB
This update provides important bug fixes and is recommended for all DVD Studio Pro 4.1 users.
03.01.2007
Final Cut Pro 5.1.4 – 3.8MB
Provides important bug fixes to resolve plugin issues. This update is recommended for all Final Cut Pro 5.1, 5.1.1, 5.1.2 and 5.1.3 customers.
02.22.2007