Re: Scratch, Scratch-scratch, Scraaaaatch
2020 isn't over yet and Zen 3 desktop processors aren't out yet? Maybe a bit premature to say they've broken any promises yet.
The X570/B550 didn't support first gen processors either, so if you want to be accurate then you'd have to say that the promise was broken in June last year.
That said, all motherboard manufacturers have said it's not actually AMD's fault. The BIOS's of those existing AM4 motherboards don't have room for the microcode of another generation of processors in addition to the current three generations they already support. It's the motherboard manufacturer's who spec the BIOS ROM size, not AMD.