This is coming up possibly soon in my current campaign and I can’t find anything on radiation effects. I’ll just make it up as I usually do but I’m just wondering if i’m missing it or if there plans to be something on this in the future. Will be posting up my campaign soon and updating the wiki on the southern area the campaign is taking place in when I don’t have to worry about one of my PCs seeing it online .

I have not seen any, but there are lots of new stuff in the works for Prelude to War and the Equipment Guide.
Maybe one of th devs can confirm if the equipment guide will have new rules to go with some of the extended equipment options.