The day before the iPhone 3G and iPhone 2.0 software are due to appear, Apple has released iTunes 7.7. The update adds support for iPhone 2.0 syncing and the App Store when it becomes available. Also added is support for a new Remote application for the iPhone and iPod touch that lets you control iTunes from those devices.
But wait, you can get a sneak peak at the App Store now! After installing the iTunes 7.7 update (available via Software Update or as a 48.32 MB download), perform a search for an iPhone application name (such as Twitterific), click the application name, and you’ll be able to browse the entire store and download applications.
Currently the iTunes 7.7 update is available only for Mac OS X 10.3.9, Mac OS X 10.4.9 or later, or Mac OS X 10.5 or later.