Google is merging Duo and Meet services into a single application for voice and video calls
Google is pushing ahead with its merger of Duo and Meet, albeit not quite as smoothly as some may desire. Google will rename the Duo app for Android and iOS to Meet, complete with a video calling-centric logo. Many of Meet's features had already been transferred. For now, at least, the old Meet application will be rebranded "Google Meet (original)."
By September, all Duo users should have seen the rebrand. You'll need to use your Google account for any meeting features, but basic elements (such as effects and contacts) will remain intact. The original Meet app will continue to function and won't include ad hoc calling; it will eventually be discontinued.
The two companies announced their merger in June, with the goal of creating a single experience that meets "evolving needs" for video calling, such as meetings. It's also an acknowledgment by Google that its mix of communication apps was becoming too complex.
Hangouts will be shut down this fall, and Chat will take center stage. For example, it abandoned Allo in early 2019 to focus on Chat. While the continued existence of Meet might be perplexing, it should become clear which Google apps you should use for professional meetings or keeping up with friends as a result of the new structure.