We've had several different reports since October of last year that Apple is planning on using TSMC for production of its next processor, thought to be the A7 line of processors. Apple has plenty of reason to avoid using Samsung for its microprocessor producing needs. Probably the main reason, Samsung is one of Apple's chief rivals.
The reports continue to stack up. This time it comes courtesy of the Korea Times who spoke with an executive as one of Samsung's local partners in Korea. According to the executive, Apple is "sharing confidential data" about its A7 processors with TSMC. They add that TSMC has started "ordering its contractors to supply equipment to produce Apple's next processors using a finer 20-nanometer level processing technology."
Of course, this doesn't mean that TSMC is the final choice. It does, however, appear to be a top contender. We'll let you know as soon as we have something concrete.