Just to let you know asap: I am right now uploading the files for our next release: "World at War: Gear Krieg - British Walker Compendium I: Cavalier" to A.D.Publishings layout guru: Dave Robotham.
Expect the release within September 2009!
The Roundhead book will follow soon after. The other British walkers (Ironside and Quadruped) will follow as soon as there are miniatures for them.
So the next walker book after the British is the Loki.