As it was expected , Apple today announced it has sold over five million of its new iPhone 5, just three days after its launch on September 21.

In addition, more than 100 million iOS devices have been updated with iOS 6 mobile operating system,m Apple added.

iPhone 5 is available in the US, Australia, Canada, France, Germany, Hong Kong, Japan, Singapore and the UK, and will be available in 22 more countries on September 28 and more than 100 countries by the end of the year. Apple said that demand for iPhone 5 has exceeded the initial supply and pre-orders are scheduled to be shipped in October.

"Demand for iPhone 5 has been incredible and we are working hard to get an iPhone 5 into the hands of every customer who wants one as quickly as possible," said Tim Cook, Apple?s CEO. "While we have sold out of our initial supply, stores continue to receive iPhone 5 shipments regularly and customers can continue to order online and receive an estimated delivery date. We appreciate everyone?s patience and are working hard to build enough iPhone 5s for everyone."

iPhone 5 features a new 4-inch Retina display; an Apple-designed A6 chip; and LTE wireless technology.

It comes in either white & silver or black & slate, and is available in the US for a suggested retail price of $199 (US) for the 16GB model and $299 (US) for the 32GB model and $399 (US) for the 64GB model. iPhone 5 is available from the Apple Online Store (www.apple.com), Apple?s retail stores, and through AT&T, Sprint, Verizon Wireless, select Best Buy, RadioShack, Target and Walmart stores and select Apple Authorized Resellers. iPhone 4S is also available for $99 (US) and iPhone 4 is available for free with a two-year contract.

iPhone 5 will be available on September 28 in Austria, Belgium, Czech Republic, Denmark, Estonia, Finland, Hungary, Ireland, Italy, Liechtenstein, Lithuania, Luxembourg, Netherlands, New Zealand, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden and Switzerland.