According to reports, AMD's next-generation Zen6 client CPUs, including Ryzen chips, will be codenamed "Medusa". According to information shared by @Olrak29_, AMD seems to have finalized the codename of its client desktop CPU based on the next-generation Zen6 architecture. The upcoming Zen5 desktop CPU series will use the GraniteRidge codename, while the Zen5 desktop CPU series will use the Medusa codename.
These chips aren't expected to be available until late 2025/early 2026, so it will be a while before AMD officially starts sharing information about them, as even Zen5 doesn't have many details (officially).
Codenames aside, it appears AMD's Zen6 consumer CPUs will feature a new interconnect technology based on the 2.5Dchiplet design. This design is said to enable higher chip-to-chip bandwidth so that the Zen6CCD can communicate faster through each CCD as well as the IOD.
We demonstrate AMD's chip representation using the Navi31 GPU, where two MCD stacks represent the dual CCDs and a small portion of the GCD represents the IOD. This may imply that the Zen6 "Ryzen" processor may once again adopt a dual CCD chipset design and a single IO chip. The IOD may become larger to incorporate next-generation technology, but that's not certain right now.
There are also some details being pointed out that the Medusa CPU (Ryzen Zen6 desktop) will not stack CCD on the IOD due to the higher cost of this design. AMD may try these designs in the future, like the 3DV-Cache stack on Ryzen5000 chips, and further mature it on the Ryzen7000 SKU. According to previous information, the AMD Zen6 core architecture is codenamed "Morpheus" and will be launched in 2025-2026.
With the Zen5 release date set for 2024, we can expect the company to start sharing more information about the next-generation Zen6 architecture and corresponding products once it completes its upcoming releases.