Either Cubicle 7 or Modiphius.
This will be a hard sell as the first inclination of a publisher with a new edition is to redo all the core stuff.
Although the trend right now is nostalgia, and Cubicle 7 is a British company. Just like 5e D&D was a reversion back to prior editions of the game I could see a new edition of WHFRP reverting back to something more like a mix of 1st and 2nd edition to try to get the folks who checked out for FFG's 3rd edition back on board. It would follow current trends to take those 2nd edition rules, trim then down and modernize them even more, and then release it with an art design that evokes the first edition of the game to entice skeptics to pick it up.
Btw, could C7 run this as a kickstarter? Probably unlikely... but it could be really great for fans to be closer to the project. I also think this would make a better final product.
I know that GW don't usually let their licensees use KS.
Could they make OGL Warhammer D&D, or would that be a step too far?
A licensee doesn't have the authority to designate it's licensor's IP as open content. GW itself would need to sign off on that, and that ain't gonna happen!
I could see their being an attempt to make a 5E version, but it would be tricky to reconcile D&Ds Class system with WFRPs career-path system without losing some of the flavour. The actual game in play would be fine though.
So I definitely want a new WFRP game but please by Sigmar's Twin tailed comet, don't make it a 5e game. It will ruin the WFRP old world.
Why do some people think WFRP4 will be set in Old World setting and reusing previously published content? GW want the old fantasy setting forgotten, dead and in Morr's realm so supporting any spin-offs that keep it alive (or undead) go against pleasing the shareholders.
Their approach to licensing doesn't seem to support that view at present though. See "Warhammer: Total War": released after Age of Sigmar, rooted in the Old World setting, with plenty of expansion packs scheduled.
World War Cthulhu, Cthulhu Britannica, and Lone Wolf Adventure Game were all Kickstarted C7 lines, and all three are licensed. But I expect that Chaosium and Joe Dever (RIP) had less-restrictive licensing terms than GW does.Also, I do not remember C7 doing any of their game lines on Kickstarter, or at least none of the higher profile, licensed stuff.
rehashes of what has been done 3 times already?