To use macOS Sonoma, your MacBook Air, MacBook Pro, and Mac Mini must be a 2018 model or newer. iMac Pros must be from 2017 or later, and iMacs or Mac Pros from 2019.

As pointed out by MacRumors, one possible workaround appears to be this: download Apple’s Install Assistant package and manually update the M3 MacBook Pro to macOS Sonoma 14.1.

While you might be tempted to install Apple’s macOS Sonoma 14.5 update right away, there are some steps you should take before moving your Mac to the software. macOS Sonoma 14.5 update is ...

Apple removes support for old Mac hardware in new macOS releases. Here's how to run modern macOS on older Macs using OpenCore.

Given that macOS Ventura 13.5 was released in July, it seems that Apple began stockpiling the 14-inch MacBook Pro with the M3 chip several months ago.