Rob's right I do have the UWZ book, at great cost, but it is a great source material so I am happy to have blown over $120 to get it. All the old versions of WZ and the RPG have been sources of inspiration for us at Prodos, as have the fans on here, (so of which have authorship rights in WZR) the WZR forum, FB and Dakkadakka. I have to say we have been very lucky to have such a collective mind of inspiration behind us. That said we aren't making WZ1st or 2nd or UWZ part 2 instead WZR.
And WZR will pay homage to what has gone before, but not be solely driven by it. all new models, all new rules, all newly written fluff, new art work (to complement what is available or obtainable of old). All set in the MC world that we have all loved for the last 20 odd years.