Ignoring the tools that developers and creatives use to create and sustain this thriving ecosystem is a very dangerous move on Apple's part. Skylake chips for the Macbook lines have been available for months and the Mac Pro hasn't been updated since 2013. OS X itself continues a long list of bugs and this only grows with "customer" features inevitably introduced down the line. El Capitan was supposed to give Apple a year to slow down and fix things but we have found it has been a huge problem in our work environment.
Datacenters don't run on iPads stacked in a rack, media companies don't play stuff out of an iPhone with a dongle. Xcode alone is the single reason OS X is still incredibly relevant. I don't see Jony Ive designing the latest iOS devices on an iPad for years to come and ignoring these professionals is not a good move.
Here's to WWDC, when the Skylake chips suited for the Macbook line were introduced 9 months prior.