Apple's "Project Azalea" might be a TSMC-run chip foundry to replace Samsung as supplier

The Azalea foundry is allegedly being shopped to New York, California and Texas too, and will present itself in a 3.2 million square feet factory, employing a thousand of highly skilled semiconductor engineers. The foundry operator is expected to be TSMC, as it is the only other chip producer, besides Intel, that can eventually deliver Apple's quality and yield demands. 

Oregon has a lot of experience with chip manufacturers, and is providing them with billions in incentives, plus Apple has a data center there already. The move from Samsung to TSMC is rumored to begin as soon as the second quarter of 2013, so that Cupertino has its ducks in a row when the contract with Samsung ends next year.

source: TheOregonian via AppleInsider