@Kurtroedeger just done a bit of checking
"Donāt worry if you donāt see the new scheduling options in Google Messages yet. Google isnāt flipping the switches at the same time for everyone, so to speak. Some users will have to wait a bit longer for the scheduler to appear"
The feature is rolling out as a server-side update for all Google Messages users, meaning you donāt have to download anything to use it
@Kurtroedeger i'm on version openbeta-dynamic 7.0.0.37
i'm a beta tester with google msgs app
i have it on a few devices one beta version one not and so far the beta version is only got it for me
as far as i'm aware it is rolling out now to stable versions of the app - so maybe get an update soon