I just installed my first Inovelli White and this is exactly what I’m looking for, too.
I found this from months ago: The State of Matter - #5 by marcelveldt
So good intention on HA side, but uncertain about timing.
As you found, the switches already support it. That leaves bulbs. Have you found any evidence of any bulb supporting it yet (preferably a thread bulb)? I picked up a Nanoleaf (reasonable price point), but I don’t want to start buying in quantity until I know I’m buying something that (will) support bindings.