Here is Everything New for the Apple TV in the tvOS 18.3 Update So Far

Apple on Monday seeded the first tvOS 18.3 beta to developers for testing. The update will likely be released in January. So far, there are only minor changes for the Apple TV, with one new feature and a few code changes discovered.
Below, we outline what is new in tvOS 18.3 so far.Robot Vacuum Support in Home App
First, tvOS 18.3 will add robot vacuum support to the Home app on the Apple TV, based on code-level references to the feature in the first beta.
Here is how Apple describes the feature