I just went in and manully tuned my now 2nd 13900ks cpu myself in the bios by locking all the cores to 56, and set the vcore to 1.345v with a offset of -110 as well a dropping the vcore pwm frequency to 400, and power limiting the cpu to 253 watts, and my chip has been fine, no issues at all. It runs cooler and even a little faster, and I have had my 2nd 13900ks for 3 months now.

I Didn't see this vid posted but you don't need a new microcode from Intel if you don't mind playing with your bios. I saw above several people have already done this. Here is a step by step guide.
https://www.youtube.com/watch?v=afN6SaT21cQ&t=426s

Yeah, I gave a step by step tuning guide in another post question on here for Z790.

 
From EVGA today (08/21): "We currently do not have any updates to report and we are waiting to hear from Intel."
 

Got same response.

 
I guess we should ask Intel to give them instructions 

Intel is currently distributing to its OEM/ODM partners a new microcode patch (0x129) for its Intel Core 13th/14th Gen desktop processors which will address incorrect voltage requests to the processor that are causing elevated operating voltage.
 
https://community.intel.com/t5/Processors/Microcode-0x129-Update-for-Intel-Core-13th-and-14th-Gen-Desktop/td-p/1622129