Another rumor about the iPhone 5 release date emerged claiming that Apple's 2012 flagship phone will be released on September 21.

The rumor came from a French Web site citing Chinese sources from a company that manufactures iPhone accessories.

The source also confirmed the rumor that the next iPhone will use a 19-pin connector, replacing the 30-pin hook-up that Apple has used for its iPods, iPhones, and iPads since the third-generation iPod was introduced in April 2003.

In addition, the source also said that the headphone jack will be moved from the upper left to the lower left of the iPhone. As of the screen display, iPhone 5 will sport a screen size of 3.75 inches, which is larger than 3.5 inches but is smaller than the rumored 4 inches screen display.

Another speculation on the new iPhone commenced production. Moreover, the report included a new survey revealed that there is an "unprecedented" pent-up demand for the device.

It was first reported that the new iPhone will be released on August 7. However, Boy Genius Report put cold on the rumor of August 7 release date. According to the "trusted sources" mentioned by the report, the iPhone 5 is most likely to be released in September or October.

There may be some truth in the new rumor about iPhone's 5 since there is a decrease in sales of iPhone 4S. In the most recent report, Apple's third quarter earnings were below analysts' predictions. Apple said it sold 26 million iPhones, down from 35.1 million in the previous quarter.

Apple's chief executive Tim Cook and CFO Peter Oppenheimer admitted that the rumors and speculations circulating about the upcoming iPhone affected the sales of current iPhone.

The rumors caused some consumers to put off purchases of the current phones and are now waiting for the newest model.

"We're reading the same speculation about a new iPhone as you are, and we think this has caused some delay in purchasing," Oppenheimer said.

Apple's CFO is referring to the flood rumors about the iPhone 5 that claimed that the next handset will have a larger and thinner display, a new dock connector, and a faster processor and larger graphics.

However, the two were still secretive of the details of the upcoming smartphone. In May, Cook said he was planning to "double down on secrecy" on products, but he conceded it won't stop the speculation.

"I'm glad that people want the next thing, I am super happy about it. I am not going to put energy into getting people to stop speculating, that's not going to amount to anything," Cook said.

Apple is also rumored to be planning a smaller version of its iPad before the year is up, which would compete with Google's recently-announced Nexus 7. Cook wouldn't comment on that and mentioned the $399 version of the iPad 2.