From their announcement:
The book – a pdf only version – is the 6th supplement to our Gear Krieg book. It will give you even more Two-Fisted Pulp Superscience German Walkers to use in your games of Battlefield Evolution: World at War.
The German Walker Compendium II: Walküre – or Valkyrie as it was called by the Allies – is your comprehensive guide to using the German superscience walker Walküre in Battlefield Evolution World at War: Gear Krieg.
The German Walker Compendium II: Walküre takes a detailed look at the many types of this superscience walker for your German forces from all theatres and periods of World War II! Each vehicle is detailed with background information, factory variants, field modifications and a modelling guide.
Included are 14 Walküre variants; Ausführung A to H, the “Flak-Walküre” and “Sturmwalküre”, Ausführung E-2 to E-X and even the rare Alpenkämpfer and the Panzerbefehlskämpfer II; the book also provides new Traits, an AFV force list and an extended German armoury to add to your games of World at War: Gear Krieg.
All units in this book are designed by the same principles as the existing vehicles in the Battlefield Evolution: World at War and Battlefield Evolution: Pacific War rulebook also written by Agis Neugebauer.
This book will require the use of Battlefield Evolution: World at War, available from Mongoose Publishing.