On music production blogs I always see people complaining how Apple is abandoning Mac and its pro software. If you are one of those people you should read the Macworld's interview with Apple execs on the Mac at 30.
Bud Tribble (Apple’s vice president of software technology):
That cross-pollination of ideas, the fact that the [Mac and iOS] teams are the same team, has propelled the Mac further than I had hoped for.
You don’t want to say the Mac became less good at being a Mac because someone tried to turn it into iOS.
There’s a role for the Mac as far as our eye can see. A role in conjunction with smartphones and tablets, that allows you to make the choice of what you want to use. Our view is, the Mac keeps going forever, because the differences it brings are really valuable.
So, there you have it, Mac is not going anywhere.