Apple showed off new features of the iPhone’s revamped operating system during Jobs’s last major Apple event, a developers conference in June. The new software, called iOS 5, includes new notification and text messaging systems. The company also said in June that it will debut iCloud, which lets users to wirelessly access music, pictures and other files across different Apple devices.

The new iPhone could be Apple’s best-selling product yet. Apple may sell 110 million iPhones in 2012, a faster pace than this year, when nearly 40 million were sold during the first half of the calendar year, according to Mike Abramsky, an analyst at RBC Capital Markets in Toronto.

Pent-up demand may help sales, said Maynard Um, an analyst at UBS Securities LLC. Apple is unveiling a new model 16 months after the iPhone 4 debuted, compared with the 12 months between previous model updates. In addition to the stronger processor and improved camera, the new iPhone may have faster networking technology, improved graphics performance and potentially be thinner and lighter, Um said.

This may be the last time Apple can wait so long between new iPhones as rivals including Samsung Electronics Co. and HTC Corp. introduce competing smartphones using Google Inc.’s Android operating system.

“A year and a half, especially in the smartphone product cycle, is many lifetimes,” said Ashok Kumar, an analyst at Rodman & Renshaw LLC in New York.

Apple is set to expand the number of wireless providers for the iPhone. Sprint Nextel Corp., the third-largest carrier, will begin offering Apple’s phone in the U.S. with unlimited data services plan next month, people familiar with the matter said. AT&T Corp. and Verizon Wireless now are the only two U.S. carriers of the iPhone.

The new iPhone probably won’t be less expensive than the current model, which is sold to wireless carriers for $600, said Gene Munster, an analyst at Piper Jaffray Cos., in a research report. Service providers generally subsidize the price for customers. Instead of making the phone cheaper, Apple is likely to drop the price of the current model iPhone to give consumers a more affordable alternative, Munster said.

The new model may include voice-recognition software, Munster said. He speculated that the “Let’s Talk iPhone” wording of the invite may refer to such speech-based features. Apple purchased a speech-recognition software company called Siri last year.

In the first full quarter on the market, Apple may sell 25 million iPhones, Munster said, adding that this estimate for the period ending in December may be “conservative.”

Natalie Harrison, a spokeswoman for Apple, didn’t immediately return a call seeking comment. 

(Bloomberg)