It looks like we’re not done with the VIIth Legion just yet – I caught sight of this awesome Command set a few days ago being worked on in the Forge World Studio.
This is the caption attached to the pic on the FW site
, so I'm pretty sure that mini is part of the squad rather than Sigismund. We'll know soon enough. It's usually only a couple of weeks before the stuff seen in the bulletins are up on the site.