Apple last year did come out with two models of their newer iPhones the 6s and the 6s plus, the latter suited for users choosing a bigger display as per comforts.
Apple's iPhone 6S Plus has also been hit by backlight production issues.
Last year, iPhone 6 and iPhone 6 Plus sold 10 million units in the opening week.
New leaks claim the phone may not be the minor upgrade over its predecessor iPhone 6. The iPhone 6S and iPhone 6S Plus are expected to be unveiled on Wednesday.
Apple has sent invites to the event with suggestions to ask Siri for hints.
Leaks from a Chinese telecom executive suggest iPhone 6S/iPhone 6S Plus would be available for pre-order September 11. Other reports suggest Apple may have be planning a massive launch event before a 7,000-strong crowd.
Apple is expected to unveil Apple iPhone 6S and iPhone 6S Plus on September 9 while sales are set to begin September 18. Pre-orders are likely to begin September 11.
The new iPhone 6S and iPhone 6S could be unveiled in the first half of September and may go on sale September 18.
New reports claim that Apple would unveil the new devices on September 9 and put them up for sale on September 18.
Rumors of a iPhone 6c launch with iPhone 6s and iPhone 6s Plus on September 9 have been doing the rounds in the past few days.
Now that iPhone 6 and iPhone 6 Plus are already 6 months old, rumors surrounding the next version of iPhones have already started appearing. If latest rumors are to be believed, Apple is working on a third mysterious model of the iPhone, other than iPhone 6S and iPhone 6s Plus.
