This really sucks... they barely change the OS that they release every year, and it's all to screw over existing Mac users. They've just ruled out both my laptop and desktop. I still have lots of time before El Capitan is 'obsolete,' but it's still very annoying. It's also very annoying that my 4,1 and MacBook Pro (and others') will now have to be treated like 1,1/2,1 Mac Pros, in that these machines will now have to receive workarounds for the latest "macOS." What a shame. They've spiffed-up iOS, yet Mac OS (no, I am NOT calling it "macOS") is a lame duck. Anyway, I wonder if Apple has actually made a comeback, or if they'll continue ruining things like iTunes and iWork. The new iOS looks more promising than what they've recently been doing, but it's Apple-under-Tim-Cook after all.
Really? Screw over existing Mac users? lol I'm on an Early 2009 iMac. Unfortunately it's not on the supported list of machines. But this Mac came with 10.5.6 Leopard. It lasted all the way to 10.11.6. It's a damn good run.
Clearly they made a number of changes to the iMacs in 2009, as there was an early, mid, and late 2009 model. So what changed with the hardware? And why cut off the first two models that year? I have no idea.
And they ARE NOT barely changing the OS. They have been doing extensive uno the hood changes.
But I'l try to install macOS Sierra on this machine anyway.
Oh and my last Mac was a G4 Digital Audio. That ran Mac OS 9.1 all the way up to Mac OS X 10.4.11.