At any moment, Google should begin their “A morning with Google+” event which is streamed live to the world on YouTube. We’d imagine we will see lots of Google+ talk, new features, both web and app related, and probably not much else. This doesn’t exactly scream “Nexus event!” to us. One report already suggests that we’ll see Auto Awesome for videos, a feature that has been available to photos on G+ for some time. Other than that, the rest is not confirmed.
There is apparently some sort of power outage at the Google-plex this morning, so the event hasn’t begun yet. It should start soon.