There have been rumors that TSMC would handle some of Apple’s future chip production, but details of the purported arrangement have been vague. The Korea Economic Daily may have just filled us in, however. It claims that Samsung will make 30 to 40 percent of Apple’s A8 processors next year, with TSMC presumably assembling the lion’s share. Apple wanted TSMC to be the sole manufacturer, but the challenge of building 20 nanometer-class chips led to a supplementary agreement with Samsung, according to the Daily‘s tipsters. Neither side has commented on the report, so take it with a large grain of salt. If the story is accurate, though, it suggests that Apple will have only modest success in excluding its arch-rival’s technology from next-generation iOS devices.