Good.
Apple doesn't need another cock-up like the iOS 6 / Apple Maps débacle. Having someone who actually cares about creating good product, even if it takes a little while longer, in the driving seat is a good thing.
With hardware production, you have to pre-purchase components, reserve whole factories in advance, tool the casework machines, configure hardware pick-and-place component assemblers and gear up a production line. Delays cost fortunes, because the factory will still be charging you for the time the plant isn't making money elsewhere. If software is a little late, it's a lot less expensive. Production lines are much more generic and can be working on other products until the "gold master" is ready to press. If you're delivering electronically - which is far cheaper still - delays cost nearly nothing. Essentially, the costs of software delay are mainly deferred revenues.
Well done, Jony - seriously. Make it a good 'un, and let's see what Apple can do when its innovators are given the chance.