If you don't have a general release date to announce then STFU. An undefined "coming soon" just makes people feel excluded and angry.

You see, I will release a really good model some day. It’ll get like 300 on AA.

I'd go one further, if you're not actually releasing it, then STFU. Google's working on a model? Yeah, obviously. If I can't use it today, they need to just keep their mouths shut. I'm tired of their vaporware.