QuoteAt about the same time, but separately, Google stated third-party applications should stop supporting XMPP by May 15th 2014. Now that this date has passed, like you, we have observed Google services using XMPP are still connected and working, e.g. you can still place and receive calls using a Gmail account configured on your Obi device. It is important to note, this does not change the previous statements from Obihai that we no longer support direct connections to Google Voice on OBi devices. We strongly recommend all OBi owners using the Google Voice service obtain a new service to ensure continued, uninterrupted calling from the phone connected to the OBi.
Interesting how the email was written in this passive stance. It's probably written in a way to please Google in case XMPP do continue to function (e.g. We don't officially support this functionality, but that doesn't mean we will remove it from our firmware...)