Rumors of Apple switching its chip manufacturing from Samsung to TSMC have persisted for a long, long time. However, they may be more substantial this time around: the Wall Street Journal claims that Apple quietly signed a deal with TSMC earlier this month. The agreement reportedly has TSMC taking over some of Apple's chip production in 2014. Technical setbacks kept the agreement from happening any sooner, according to the sources. Neither company is commenting on the accuracy of the story, although few would doubt Apple's incentives to reduce its dependency on Samsung-made silicon -- it's not keen on funding a primary competitor.