I take three (3) things away from this...
a. Apple is going to release a bunch of new "stuff" this year but we knew this already. Considering no new hardware was released at WWDC, some lines will see a refresh, others not; one or two may be retired. Apple knows they don't need to do an annual refresh to push sales (like autos) but they can stretch it to 18mo or possibly 2+ years. The performance gap is largely negligible (thanks SSDs!) for the average consumer who is holding on to her or his Mac longer, getting free upgrades, and has a Genius Bar to take it to. --Am I missing anything? Oh, yes... Intel can't go past 14nm, so the next step is ARM-based chips in the next year or two. Introducing the new MacBook Pro...16 core A-series CPU (upgradable to 64 core), 32GB LPDDR RAM, and 512GB PCIe SSD.
b. Apple is far less concerned about developers; it's a fools errand to cater to developers and customers, despite the former also being part of the latter. Developers represent an important yet small, tiny segment of market revenue as a whole, and Apple knows this. They're simply not concerned about developers because they will fall in line when their profits are tied to their platform; it's simple economics, really. The Windows and Android markets dwarf Apple's considerably but unless you're an A-list developer (i.e., Adobe), the profit margins are razor thin so you sail where the profits are. Principles don't pay bills--sales do.
c. Consumers are Apple's future--period. Apple knows this, and is pulling out all the stops to make the hardware last longer, the software easier and more privacy-conscious than ever. Unless everyone has developed amnesia in the last few years, I remember paid OS and software upgrades right alongside boxed software; both are now extinct. Seriously walk around what's left of retail computer stores (Micro Center? Fry's? Best Buy?), and you'll find less than ten pieces of actual software available, less than half of that come with a physical install CD/DVD. Unlike twenty years ago, hardware is now to software what carriers are to smartphones (to quote Jobs): orifices.
Apple is pushing software and services, hardware now follows both. Look at the last quarterly earnings....services, services, services. The average consumer is not clamoring for raw computer speed or the newer/faster/better MacBook or iMac but a cheaper iPad, a faster iPhone, and maybe a slimmer MacBook (Air/Pro). Performance is largely passé, and the "megahertz" battles of 15+ years ago are over and done with.