Kind of amazing that the last two weeks people have been complaining that Apple ships too fast, with too unpolished releases.
Here is something that is missing from the commentary, which is summarized well here:
http://daringfireball.net/2015/01/apple_eras_of_flux
The missing bit is: they have been doing it to crush Android and Microsoft. Health, home, money, proximity — all in scope and tightly integrated through an ecosystem of products.