Chipbakker TSMC would currently run tests with the production of Apple’s upcoming A6-soc. If the yields are good enough to prove, then would Apple consider to be chipproductie to switch from Samsung to TSMC.
Or Apple actually with TSMC in the sea, would mainly depend on the yields that the chipbakker know to realize. There have been going longer rumors that Apple are chipproductie at Samsung wants to remove: the two are currently embroiled in a number of lawsuits about intellectual property. So accuses Apple the South Korean manufacturer, the design of the iPhone and the iPad, copied to have for its Galaxy line.