They will probably release Zen 3 support for B450 and X470. Just like happened with previous gen. It won't be "guaranteed". Some motherboards will support it some not. But for AMD this is could also be a win, because more people would upgrade their CPU from Zen /Zen+/Zen2 to Zen 3. A lot of people upgrade if they just need to change 1 piece quick, without needing to buy a new motherboard, removing the old one and installing the new one. And the more the mods you have, the more painful this process is. I personally don't mind changing the CPU. But to change the motherboard it's a pain in the ass. Last time I upgraded the B85M to the B450 I That being said, anyone who has a Zen 2 and wants to upgrade to Zen 3, it's just for to have the last gen. There is no way a Zen+ or Zen 2 will become obsolete soon. You can even upgrade from Zen 2 to Zen 2 and have a huge difference. I have a 3700X I could jump to a 3950X in the future. Another tip: Don't buy Zen 3 in the first 2-3 months. The process matures quickly and the binning gets better after a few months. This will also give you some time to check if your AIB released a bios for Zen 3 support in an old chipset.