As Google is working on lots projects at the same time which we can't guess. Here is one more new projects news I found today on which they are working currently.
This Project's Name is "Spaces" : They making an new group chatting/conversation app for Android users.
What is Google Spaces?
|Image via Androidpolice|
Google Spaces PlayStore
But as it's using an internal server now, so the apk will be not helpful for you. Apps still is in testing, so it's hard to say when it will be available for all.
Spaces is using an internal server right now, so the APK won't do you any good (sorry). The app is still in dogfood testing, so we can't say when (or if) it will be released, but it should be at this URL eventually.