There's been some mention of a 28mm Indiegogo campaign. While that may be true (we do have some greens done and at the caster) we say, why wait?
You can get the Decks and supplement High Rise to Hell now and use them with your 28mm gaming. The 28mm's will be coming out from THW but they will be available in sets separately so there's no need to wait get your decks and supplements at a discount while you can.
Anyway, here's a sneak peak.