@Tompa just found this page https://www.tp-link.com/uk/support/faq/2702/ which says What kind of devices supports Sunset/Sunrise Offset and Fade rate? Note: you need to wait for the new firmware...

@Kevin_Z All firmware is latest versions. The app doesn't specify that it is hardware dependant so shouldn't make any diffreence so long as it already supports sunrise/sunset.

@Tompa yes I am tryin to find that feature too. As you say, the app release notes indicate it is there but it isn't.