https://videocardz.com/newz/amd-ryzen-5-5600x3d-6-core-cpu-with-3d-v-cache-is-reportedly-coming
5600X3D would be interesting, in theory performing very close to a 5800X3D in most titles. But they're just rejected 5800X3Ds, no new CPUs.
EDIT: oh, this was already discussed, lol.
I think Zen3+ for desktops on a 6nm node would make sense even with Zen 4 out and Zen 5 coming because the demand for AM4 will remain high for years and the production costs could be lowered.