Firmware upgrade for wired backhaul?

One of the best features of TP Link EasyMesh routers is that TP Link are rolling out wired backhaul as a feature of EasyMesh. The EX820V I have doesn’t currently have backhaul as a feature, so will you be updating the firmware to add it in? I bought an RE700x not realising it wasn’t standard, so would appreciate it being added.