Intel wants to get into the Foundry business for making Apple CPUs.
Apple designed their own CPUs starting with the A4. Right now the A5 is powering the iPad 2. Samsung is making the ARM based CPUs for Apple right now. According to EE Times Apple already has a new foundry partner for the Apple A5 and future CPUs with Taiwan Semiconductor. Now Intel is supposedly also interested in making Apple CPUs via their relationship with Achronix Semiconductor reports EE Times.
Intel is already the CPU partner for the Apple computer lines. For Intel it totally make sense to also participate in the growth Apple has in the mobile device sector. Intel should have been able to give Apple a CPU that they liked in the first place. Instead Apple went off and designed their own for the iPhone and iPad.
There is some bad air between Apple and Samsung because of the new patent dispute. Apple has strong supply relationships in place with Samsung though. Eventually Apple wants to disconnect itself from Samsung as they compete on the tablet and smartphone markets.