Mountains of Apple iPhone rumors are piling up, and the company, as usual, is keeping its mouth shut.

Perhaps the heated speculation is due to the fact that Apple has not released its next generation of iPhone at the 2011 Apple Worldwide Developers Conference (WWDC), breaking away from its three-year trend of having the new smartphone announced every June.

The rumors have it that Apple is planning its next launch of iPhone this September, and the questions of what, how, and how many are becoming a sensational topic on the Web.

Followings are some of the rumors, including the double-launch of iPhone 5 and iPhone 4S, the “iPhone Mini”, and free iPhone 3GS.

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iPhone 5 concept art
gadgetmedia.info: iPhone 5 concept art
Apples iPhone
Apple and other phone makers outbid Google in an auction for 6,000 smartphone patents Apple
Could Apple iPhone 3GS be free
An advertisement of iPhone 3GS in Bangkok Reuters
Apple has iPod Mini, iPod Nano, iPod Shuffle... What about iPhone Mini
Redesigned iPod Nano are shown on display for the media at Apple's "Let's Rock" media event in San Francisco Reuters
Apple iPhone 5 to Have Voice Control
A recent report has indicated that Apple's highly anticipated iPhone 5 will include a new iOS 5 run voice control feature. engadget.com
Apple boss bio-book renamed Steve Jobs
Former CNN chair and Time managing editor Walter Isaacson has been successful in profiling the lives of heavyweight figures such as Albert Einstein, Benjamin Franklin and Henry Kissinger that he realized he could not risk bungling his new project, the authorized biography of Apple head Steve Jobs. Reuters
Smartphone Apple Iphone Smartphone