Apple has officially released iOS 6.1 to the public for iPhone, iPad, and iPod Touch. You can do the update through either iTunes or over-the-air download. they made several important improvement in iOS 6.1. iOS 6.1 now also supports LTE for more carriers in some countries. If you are hard of hearing and you do like to use Siri, it has been upgraded with the ability to buy movie tickets through Fandango however it is only available in US for now. The update is required for only iPhone 3GS, iPad 2, or fourth-generation iPod touch. For more information about carries with LTE in additional countries, you can check it out at http://www.apple.com/iphone/lte anytime.