There are those rumors. In fact, there's no announced 7800X yet. The speculation is they launch a 7800X3D a few weeks to a few months from now with 3D cache fro

There are those rumors. In fact, there's no announced 7800X yet. The speculation is they launch a 7800X3D a few weeks to a few months from now with 3D cache from the beginning in that 7800 name space. To me that seems likely. There's a rather more optimistic rumor that all the 7000 series will eventually have 3D cache versions, which I find maybe too optimistic.