While Google is still trying to figure out what its unified messaging app is going to be, the company seems to be putting the work into making Google Duo app a bit more useful for its users. Android Police reports on new features coming to the service that could introduce group calling as well as a low-light mode. So far, it looks like group calls can include as much as eight people in total (including you). There will be a “Create a Group” option that will let you choose who to add to calls. You can even rename the group. But once the call starts, you will not be able to add any more users.
Aside from this, the app might be getting a low-light mode. The app will reportedly “automatically [adjust] your video in dark environments so others can see you better.” There isn’t word yet when these will be officially coming, but with testing underway we might see it soon.