Google has no shortage of communication services and apps, each of them overlapping with one another in some way. Some of them haven’t been shown some love, sometimes even for years. Google Voice is perhaps the on that got the shortest end of the stick despite how useful it is. Now, however, Google seems to be preparing what might be the biggest update to the service in a long time. It is putting out a call for beta testers of its Wi-Fi and mobile data calling, a.k.a. VoIP that would, of course, overlap with other Google apps and services that offer the same functionality already.