With over 10 years of cooperation, Intel have been a mainstay in Apple hardware - taking over from Apple's co-designed chips with PowerPC due to them reportedly having issues with slimming down their laptop range, turning to the processor giant for some help.
In a recent interview with Business Insider, Intel's CFO Stacy Smith stated "for a customer like Apple you'd have to take a big step off performance to step off our architecture. That is what in essence enables us to win across different customers."
This is a rather big statement from Intel, but lets be honest here - Intel is at the top and it will stay that way for a long period of time no matter what happens.
There has been some rumors that Apple are looking to move on from Intel in order to utilize ARM architecture in their products, however nothing tangible has come to light as of yet.