Rose gold, Force Touch

A customer holds an iPhone 6 (right) and iPhone 6 Plus after the phones went on sale in New York, September 19, 2014. [Photo/Agencies]

Tech website Apple Insider reported on May 12 that Ming-Chi Kuo of KGI Securities, who has a solid track record on Apple leaks, issued a new research note that revealed a number of changes planned for Apple's so-called "iPhone 6s".

He said Apple will offer a new rose gold option, though he didn't indicate how much the high-end luxury model might cost.

Force Touch, a technology that can enhance user experience due to more input methods and support of handwritten signatures, will be the biggest upgraded selling point, but also one of the main bottlenecks in the supply chain.