Zen 6 X3D will be fascinating. With the move to 12-core chiplets, the standard single-CCD X3D model will have 12 cores, and it will be great. But nobody needs that many cores for gaming yet, so if 8-core or 10-core X3D becomes available, it would be an obvious choice while matching or beating the 9800X3D in core count. The multi-threading performance of 8-10 Zen 6 cores should be acceptable for most users.
It would be a great time for AMD to cancel a dual-CCD 9900X3D successor, and make people choose between 12 or 24 cores instead of offering 16/20 in the middle. Then provide more supply for the lower model. Probably with a staggered release to not undercut the 12-core.
Here's
what AnandTech said about the 5600X3D in 2023:
I don't think the packaging can be allowed to fail, it would be all or nothing. There must be some intent to put cache chiplets on top of 6 good core CCDs, or what was thought to be 8 good cores, but the completed X3D product didn't make the final validation cut.