The new version of the iPhone 5C that was a flop , the iPhone 6C might be arriving alongside the iPhone 6S and iPhone 6S Plus, this September 9th at the Apple event.
Rumors are saying Apple learned the lesson with the iPhone 5C and will make a big correction with the iPhone 6C making it more powerful, nice looking , but keeping the 4 inch display.
Speculation: The 6c will allegedly come with a new generation chip, based on either Samsung's 14nm or TSMC's 16nm manufacturing process. That means that hardware won't be directly borrowed from the iPhone 6, which runs of a 20nm A8 chip. There has also been talk of a metal chassis and a larger 1715 mAh, in place of the 1500 mAh pack in the 5c.