The new hardware list at:
https://firmware-selector.openwrt.org/?version=23.05.0&target=mvebu%2Fcortexa9&id=linksys_wrt3200acm
seems to show that latest 23.05 is available for LinkSys WRT3200ACM
However, the Table of Hardware List at:
https://openwrt.org/toh/start?dataflt[Brand*~]=linksys
seems to show that only 22.03.2 is supported.
I've a Linksys WRT3200ACM that I'd like to flash with latest OpenWRT firmware but if this model is no longer supported and is EOL w.r.t. OpenWRT, I'd rather sell the router and purchase some new model that will have support going forward.