Granted it's hearsay, but just when you think they can't push it any further, they just might. While unconfirmed whatsoever, word out on the street is that AMD is pushing the number of EPYC cores even further beyond 64-cores. 

The most extensive models now already have 64 cores and 128 threads per processor. And yeah, Zen 4 EPYC processors could make a move towards 96 cores and 192 threads. ZEN4 would also be capable of handling DDR5 5200 memory and would make a move to PCIe 5.0. If true, the rumor indicates the chip is capable of 128 PCIe 5.0 lanes and 3 TB ram. Asia Media website Chiphell managed to get more common information. Each socket has a minimum of 64 cores with two threads under the hood and a maximum of two sockets can be used. Each chip has 52-bit physical addresses and 57-bit virtual addresses. The chip can also handle avx3-512 and bfloat16, among others.

ZEN4 is still on the horyzen (see what I wrote there;) and would be a series that becomes available likely in 2023 according to the perhaps dated roadmap.

AMD working on a prodigious 96-core EPYC processor