Thanks. I was wondering too.
This is what I see running master from about a week ago.
root@OpenWrt:~# grep \"name\": /etc/board.json
"name": "Linksys EA7500 V1 WiFi Router"
root@OpenWrt:~# opkg list "*ath10k*"
ath10k-board-qca99x0 - 20201118-3
ath10k-firmware-qca99x0-ct - 2020-11-08-1
kmod-ath10k-ct - 5.10.39+2021-01-11-9fe1df7d-2
root@OpenWrt:~# grep vht_capab /var/run/hostapd*.conf
vht_capab=[RXLDPC][SHORT-GI-80][TX-STBC-2BY1][SU-BEAMFORMER][SU-BEAMFORMEE][MU-BEAMFORMER][MU-BEAMFORMEE][RX-ANTENNA-PATTERN][TX-ANTENNA-PATTERN][RX-STBC-1][MAX-MPDU-114]