The app AppleTV already included a section dedicated to the programs currently being watched (“Watching”), but this time it’s AppleTV+ (therefore the subscription) which gains a “To be continued on Apple TV+” section. This update can easily be understood. When it was launched, Apple TV+ had very little content (series or films), and it was probably less “humiliating” for Apple to combine Apple TV+ programs with all the other content being watched (HBO, Amazon Prime Video, Starz, etc).
Now, with more than 100 different programs in the catalog, detailed monitoring on Apple TV+ becomes really necessary as long as you stick to the content of the service, of course. The “To be continued on Apple TV+” section is available on the app for Apple TV and of course also on the iOS, iPadOS and macOS versions of the software.