In addition to the release of iTunes 10 for Mac and PC earlier this evening, Apple has brought the Ping social music networking feature to the free iTunes application for iPhone and iPod touch. Rather than offering Ping as a standalone application, the company has integrated most of its features into a button that’s now found at the bottom of iTunes, using button-style tabs to let you switch between a timeline of Activity, lists of People you follow and who follow you, plus Profile, which contains a seemingly non-editable version of the profile you create with the desktop application.

Notably, the Ping button does not appear as of yet in the iPad version of iTunes, and may not do so until the November release of iOS 4.2.
iLounge’s Editor-in-Chief Jeremy Horwitz welcomes iLounge readers to follow him on Ping as he tests the service.
Update: Ping does not appear to work on iOS 3 devices, including original iPhone and iPod touch models, unupdated iPhone 3G/3GS or iPod touch models, or the iPad.