Jon Webb from Modiphius clarified this Call to Arms is a revised version of the Fallout ruleset. The designer is Mark Latham.

As to what the minis will be made of:

Expect an announcement soon on materials. Either way there will be a resin version of the minis. If it stays as PVC we have (finally) had a better quality (read harder) PVC sample that we will be able to roll out for Fallout too.

But, there is a chance it might be something even better. I don't want to get hopes up yet as we are in final decision making/costing to make that happen.

If that goes well... well it will have an impact on Fallout too...

I have become a great fan of mixing manufacturers where possible so units look more varied, great job here I have to say.

Yep. It is really annoying and ridiculous. Almost as ridiculous as sites that don't have a telephone number and miniature companies that don't send their products out within a reasonable time. (Without a reasonable excuse or a notification of delay)
I don't buy miniatures that I can't see what they look like. In fact I went to a website just the other day and found that there wasn't a picture of what I wanted to buy, so no sale.

Very nice model!
Are they available for sale, or was is it some sort of kickstarter exclusive?
Cheers
Finn

They will be.  Generally Reaper does a Kickstarter and the models are released in slow time over about a year to a year and a half from the time the KS ships.  Some get released pretty quick some it takes a while.  Here are the contents.

KS price was $12 so I would guess about $20-25 retail. 
Thanks for the comps. 

 Surely the punishment here should involve having to rebuild some of which they have destroyed under the direction of the railway modellers after having to face those who's layouts they destroyed to explain why they did what they did and they impact that their actions had?