@sarkleshark 

The word I recieved on Tuesday was that its in the works but no ETA. 

@Carl 

Intel GRX350 supports both 3rd party mesh and WPA3.

WLAN Features

• Speeds of up to 2.5Gbps TCP CDB
• Wi-Fi CERTIFIED 6 with 160MHz, QAM 1024, TWT, BSS coloring, and spatial reuse, with capability to support DL/UL OFDMA
• MCS 10 & 11
• Band steering
• Support for 3rd party mesh infrastructure
• WPA3 including Suite-B, OWE, and EasyConnect
• Intel® Direct Connect Accelerator for full CPU offloading with Intel® Home Wi-Fi Chipset WAV600 Series

@pkcv 

We were told its was hardware/chipset related.  I'll refer this back to the engineering team so see what they say.  

@Carl  Looking forward to an update on this fingers crossed for solution.

I also have a RE450 which would be nice to have this feature too. :)

@Bill46 

Hi Bill.  Yes there is.  Here is our official annoucement regarding OneMesh and WPA3.  https://community.tp-link.com/us/home/forum/topic/224142  For the AX3000 specifically though the chipset has compatiblity these features were not able to be added due to inherent errors and bugs that at this time we simply could not effectivly resolve.   This is not likely to change on the current revision of hardware at least.  If any changes happen i will let you know.