iTunes 7.5 [41.1MB for Mac, 51.8MB for Windows] features the ability to activate iPhone wherever service is offered and support for Phase, a new interactive music game designed exclusively for iPod nano (third generation), iPod classic, and iPod (fifth generation).
Apple also said that iTunes 7.5 "includes bug fixes to improve stability and performance," but did not specify what those fixes address.
QuickTime 7.3 addresses seven critical security issues and delivers:
The update, which is recommended for all QuickTime 7.x users, is available as a 52.6MB download for users of Mac OS X 10.5 Leopard, a 49.3MB download for users of Mac OS X 10.4 Tiger, and a 51.5MB download for users of Mac OS X 10.3 Panther.
QuickTime 7.3 for Windows is also available [20.3MB].