Here are a few screengrabs, which already have been published elsewhere -- on the official B7 forum, on my blog and on my Celestia page.
I dunno when the Addon(s) will be finished. It depends on whether I decide that a "diorama" is enough or if the spacecraft should interact in some way. Interaction would be significant work.
DSV-2 Liberator

Servelan's cruiser

Split screen of SpaceWorld orbiting over System's second planet, with DSV-1 preparing to depart.

The planet uses four 1K fractal textures for its surface, bumpmap, specularity, and clouds, generated using Torben Mogensen's program planet.
For scale, Liberator is about 1km long.