I don’t believe that it did. Current firmware is 1.22. 1.22 contains a slight tweak for HA users. Otherwise, 1.21 should be fine.
You can accomplish the same thing as the smart bulb mode by turning on the switch and disabling local control.
What you are still missing after doing that is the LED indicator syncing with the bulb. Create a child device for the LED and keep it synced with the bulb using a rule.