Apple launched tvOS 12.2 to the public not too long ago. Now, Apple is moving right along with the latest update for the set-top box.

Today, Apple officially seeded the third developer beta of tvOS 12.3, macOS Mojave 10.14.5, and watchOS 5.2.1. This update is minor in scale in the grand scheme of things. However, it was confirmed in the first developer beta that Apple is laying the groundwork for the public launch of its revamped TV app. The new app is available in these developer (and public) betas.

Apple recently announced a brand new, revamped Apple TV app and TV Channels. (Along with Apple TV+.) The new app launches later this year, along with iOS 12.3 and tvOS 12.3.

To update tvOS’s beta, developers need to have an Xcode profile to install the software on the set-top box. tvOS 12.3 is designed specifically for the fourth- and fifth-generation Apple TV units.

To update macOS to the latest beta, developers simply need to open System Preferences –> Software Update and follow the onscreen instructions.

And finally, to update to watchOS 5.2.1, developers need to make sure that the Apple Watch is connected to the iPhone and within range, has at least 50% battery life, and is connected to the charger.

If it is discovered that any new features have been added to any of the new betas, we will update this post accordingly.

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