After much anticipation and a ton of rumors iOS4.2 is finally available for download later today (1PM EST). iOS4.2 will be available for the iPad, iPhone 4 & 3G/S, and iPod Touch manufactured Fall 2009+. To verify compatibility with your device simply sync your iOS device with iTunes and click on the Check for Updates button. Depending on your internet connection and the number of people downloading the update it may take anywhere from 30 minutes to a couple of hours before it is complete.
Here are the top seven improvements in iOS4.2:
Products compatible with this software update: iPhone 4, iPhone 3GS, iPhone 3G, and iPod touch 2nd generation or later
If you want to learn how to use the new features on the iPad, iPhone, and iPod Touch make sure to check out our iOS4.2 guides and coverage by visiting the iOS4.2 page.