In the run up to Google I/O every year we start to see certain trends emerging in certain apps, and this year it was the Play Store that started to show us a little of what might be on the horizon. We recently saw the Play Store app updated with better ways of joining beta programs, and there were hints that the Play Store would start to pre-load content as well. Now, in what seems to be something of a first for Google, users can pre-register for the new Duo video-calling app. While being able to pre-register for an app in the Play Store isn't new – it launched last year, in fact – it's still something of a rarity to see.
In what makes for yet another messaging app for Google, the Internet giant announced Duo during their Google I/O 2016 keynote, alongside the other new messaging app, Allo. Where Allo is a more fully-fledged text-based messaging app, Duo is designed to do one thing, and one thing only; make video calls. Duo is a one-to-one, end-to-end encrypted video-calling app that makes use of new web technologies to make video-calling as simple as it was always supposed to be. Using the Knock Knock feature, users can see get a sort of preview of where someone is calling from and who else is in frame before they choose to answer the call, rather than just see their standard contact photo. This is on top of the other features that we covered earlier on, including a seamless hand-off from cellular data to WiFi and other features.
Right now, Duo is slated as launching later this Summer, which means that it's not available to download just yet, but those that pre-register for the app in the Play Store will no doubt be first in line to get their hands on it. There are some screenshots embedded below that give us a sneak peek of what the app might look like in practice, and of course the Google Play button will take you to the new listing for one of Google's latest launches.