In case you didn’t know, iOS 4.1 has been released to users. It’s available for iPhone 4, 3GS, 3G and iPod Touch 2G and later. It contains enhancements and new features such as Game Center, HDR photos, bug fixes, TV show rentals, HD video upload over WiFi, FaceTime calling from favorites and much more. A comprehensive changelog is available here.
Check iTunes for an update to your iOS device, else you can use the following links to directly download the iOS 4.1 firmware for you device.
Remember, you’ll need iTunes 10 to download/install iOS 4.1.
If you’re using an unlocked or jailbroken iOS device, stay away from this upgrade.