Publishing to Android results in message saying SDK is outdated

I’ve republished my app to Android a number of times over the past few months and every time I do, Google returns a message saying the SDK is outdated. The app uses the mobile-only option, not the new reactive option. Will the SDK be upgraded or should I rewrite the app using the new Mobile, Tablet & Desktop reactive version?

I still use the legacy version and it works fine. I think it’s just a standard warning message that shows up recently. If your app still works, wouldn’t worry too much about it.