OS X Coming to ARM?
/Tristan Schaap wrote a thesis on his time at Apple shortly after he left the company in 2010, but he was unable to publish it until August 16 2011, when an embargo protecting the sensitive subject matter was lifted. It’s now available for anyone to read, and it details Apple’s work on porting its Snow Leopard desktop operating system to devices powered by ARM processors.
This shouldn't surprise anyone. Jobs was porting OS X to Intel well before theirs were the superior processors. Apple like to have options. I'm sure they run all kinds of scenarios and have plenty of avenues being explored at any given time.