


The same is not true of my auxiliary 2010 Mac Pro, but is true of my late-2016 MacBook Pro 13,3. OTOH the key word in your post may be "yet", referring to third-party plugins. This article says you can update every mid-2017 iMac18,n to Big Sur. But hopefully by around mid-next year we should have better answers around production ecosystems so that I can finally replace the iMac. I can't even upgrade my 2017 iMac (dedicated studio machine, a couple UAD rack mount interfaces, lots and lots of third party plugins) to Big Sur, let alone see a clear path to M1 yet. I'll happily wait until all the audio software and plugins get their M1 poop in a group. I honestly have no complaints about my trusty 2009 Mac Pro that's ably doing the job right now. Oh, there's no way I'm testing this myself.
