There's hope that older Macs will be able to run macOS Ventura
Older Macs not able to upgrade to macOS Ventura may be given a second lease on life, with a hack.

Expected to arrive this fall, macOS Ventura will provide Apple Silicon Macs with new features, while still providing services to Intel-based Macs. While a selection of Mac models cannot upgrade to macOS Ventura, there is a possibility that they could be upgraded in unofficial ways.
In a tweet posted on Monday, OpenCore Legacy Patcher project lead Mykola Grymalyuk revealed that there is hope for older Macs. After months of work, the team behind the project had managed to get macOS Ventura running on Macs with "legacy Metal GPUs."
A selection of screenshots posted by the developer show a beta of the operating system seemingly running on a 2008 Mac Pro, a 2012 Mac mini, a 2014 Mac mini, and a 2014 5K iMac.
OpenCore is a bootloader that is primarily used by enthusiasts to create their own Hackintoshes, namely PCs that run macOS. OpenCore Legacy Patcher follows the same logic, but applies it to allow older and officially unsupported Macs to run newer releases of macOS.
Achieving support for macOS Ventura on older systems could be a good sign for owners of legacy Apple hardware who want to continue using the newest versions of the operating system.
However, Grymalyuk warns that there is no time estimate for when mainline support for the demonstrated features will be introduced in the mainline version of the OpenCore Legacy Patcher.
Read on AppleInsider

Expected to arrive this fall, macOS Ventura will provide Apple Silicon Macs with new features, while still providing services to Intel-based Macs. While a selection of Mac models cannot upgrade to macOS Ventura, there is a possibility that they could be upgraded in unofficial ways.
In a tweet posted on Monday, OpenCore Legacy Patcher project lead Mykola Grymalyuk revealed that there is hope for older Macs. After months of work, the team behind the project had managed to get macOS Ventura running on Macs with "legacy Metal GPUs."
A selection of screenshots posted by the developer show a beta of the operating system seemingly running on a 2008 Mac Pro, a 2012 Mac mini, a 2014 Mac mini, and a 2014 5K iMac.
After many months of work, we've finally gotten macOS Ventura running on legacy Metal GPUs!
This includes my early 2008 Mac Pro (Nvidia Kepler and AMD GCN 1), 2012 Mac mini, 2014 Mac mini and 2014 5k iMac! pic.twitter.com/cMQ5Qk8uoo-- Mykola Grymalyuk (@khronokernel)
OpenCore is a bootloader that is primarily used by enthusiasts to create their own Hackintoshes, namely PCs that run macOS. OpenCore Legacy Patcher follows the same logic, but applies it to allow older and officially unsupported Macs to run newer releases of macOS.
Achieving support for macOS Ventura on older systems could be a good sign for owners of legacy Apple hardware who want to continue using the newest versions of the operating system.
However, Grymalyuk warns that there is no time estimate for when mainline support for the demonstrated features will be introduced in the mainline version of the OpenCore Legacy Patcher.
Read on AppleInsider

Comments
I understand Apple may not be able to justify support + parts beyond 4 + 9 years, however would it be helpful if such could be possible via the 'community' given the shortened macOS cycles since 2011...?
And please slotted RAM, storage & GPU where possible, sigh...
I'm starting to wonder if I should have just gone for it and used this - even if the jump to an i7-6700 really only gives you hyperthreading and *slightly* faster cores...
A lot of my Macs dual boot into versions of Mac OS that are not officially compatible with no issue.
Apple frequently cuts support due to arbitrary reasons as opposed to genuine hardware limitations.
Many Macs are cut by Apple with no reason to do so other than Apple simply deciding that they no longer want to offer the support.
You don’t personally see the point in keeping older machines up to date, that’s fine. But I don’t get why you’re always been so vocally against others choosing to do so. I seem to remember you decided to upgrade an iMac that was no longer officially supported even though an inferior MacBook from the same release year was still supported and the dosdude patch offered 100% compatibility. That’s of course your choice, but your iMac would’ve had no issue running the newer OS.
For some, like me, it’s just the joy of keeping older computers going. For others it may well be for financial reasons, for others it could simply be that their Mac does everything it needs to and upgrading the OS buys longer life for their investment and they’re happy.
My experience is that even if a system is supported if it’s at the bottom of the envelope it won’t run worth s***. Features will be missing, and it will be noticeably slow. Two of my systems are too old to upgrade, and I’m not going to bother with this. The third could get the upgrade, but it’s at the ragged bottom edge, so I already wasn’t going to upgrade. I’ll take a well running but older OS, over a newest OS that is crippled.
But if someone wants to try it, more power to them.
Word of caution too, there are a few older applications that can only run on the older Mac OS, which can't run for me on my newer mac's, so don't lose the opportunity to dual-boot on these older boxes, you probably want to keep that flexibility too, if not now, you may in the the future.
This kind of artificial restriction is an attempt to push people to upgrade. Unfortunately Cook has realised artificially shortening the useful life of Macs means people upgrade to newer ones more regularly. If it was based on reasonable expectations of performance or required features of the hardware that wouldn't be so bad, but as proven by this "hack", performance on these older machines is just fine. Wholesale cutting off versions by model is stupid, since oftentimes the high-end previous generation Mac is faster than the low-end current gen. Microsoft manages to keep support for much longer than MacOS does nowadays. My old 2012 iMac happily runs the latest Windows 10 but is artificially stuck on High Sierra.