Curious to know whether the fact that OS X is no longer a revenue stream might mean that Apple are more inclined to open it (or at least parts of it) up.

As with a mobile OS, the services layer on top of the OS seems as important as the operating system itself. With so much of the value in owning a Mac being iLife, iWork, iCloud, maps, iTunes, the Appstore and so on, could Apple open up OS X in the way Android is open (by which I mean for inspection more than contribution and just the core, not the services)?

Seems against their culture but this takes away one of the big reasons why they wouldn't.