Since yesterday, Apple TV owners can download the latest version for the streaming device. No rush since that update doesn’t bring any new feature.
In Apple’s words: “This update includes performance and stability improvements.” (source: Apple release notes)
How to update to tvOS 17.5
Directly from your Apple TV, navigate to:
Settings > System > Software Updates > Update Software
or turn on automatic updates: Go to Settings > System > Software Updates > Turn on “Automatically Update”