iOS 6: is available for download

The new operating system Apple currently supports devices including iPhone 3GS, iPhone 4 and iPhone 4S, as well as the last two generations of the iPad
iOS 6 is available for download. The new version of the operating system of the iPhone, iPad and iPod Touch is now available for free download via Apple devices support. If you have an iPhone 3GS, iPhone 4 or iPhone 4S, iPod Touch fourth or fifth generation, or one of the last two iPad models, you can start the update via the settings menu, General Section, key update.

Apple boast more than 200 improvements in the new version of the operating system, but not all will be available for all devices. Only recent generations - iPhone 4S and iPad third generation - receive all updates. So last iPad will have access to the virtual assistant Siri and 3D maps. But all devices will be able to enjoy the new maps, Apple itself, as well as the integration of Facebook and Twitter into the operating system itself.
Launch of the new operating system comes two days before coming to stores in the U.S. and some other countries (Israel not including) the new generation of the iPhone phone from the company. IPhone 5, announced last week in San Francisco, when he comes equipped already in iOS 6, as The new generation of iPod Touch services comply parallel.
Since Apple's servers busy during these hours, expect a long wait while downloading the update, assuming you're updating your device now. Beyond that, we should mention that sometimes the launch of a major update is accompanied by software malfunctions, revised after a few hours or days, so you have installed version first hours availability may result in problems.

* to who that. dosnt know how to update is iPhone:
1.download itunes from apple Official site
2. install the itunes
3.contact iphone
4. then he would ask u to make account for apple singup and seen ure IMEI(phone ip) 
5.u would get popup window with the new update (only if u got 3GS/4G/4S)