The iPhone 6 has barely been on the market for three months but the iPhone 6S rumor mill is starting to heat up with a battle brewing between Taiwan Semiconductor Manufacturing Co and Samsung to become the main supplier of the next-gen A9 processors. Last month a Digitimes rumor claimed Samsung already locked up A9 chip production, but according to the Taipei Times , TSMC will continue to be the main supplier of Apple's processors slated to the next generation of iPhones and iPads in 2015.