Have we announced the names of the Vanguard variants yet?

Yes. The standard Vanguard is the Vanguard Warden, and then there's the Vanguard Sentinel and the Vanguard Harbinger.

And you saw the cockpit of the Vanguard Warden, which is the base model, in the sneak peek of yesterday's Around the Verse.

And you saw a little bit of the Sentinel on Sandi's Facebook last night.