I really can't imagine any of the Forge World Ork models being revived in plastic. While Orks are iconic, their FW offerings were obscure and unremarkable aside from the Gargantuan Squiggoth, which is technically still being sold by GW. And that exception has mainly to do with its presence in Dawn of War over two decades ago, when Orks lacked a super unit in their regular plastic range. Since then, Orks have gotten the Battlewagon, Stompa, Gorkanaut, and Kill Rig. Many of these are also replacements of Forge World models in the same archetype:
- Battlewagon/Battle Fortress -> Battlewagon
- Mega Dread -> Gorkanaut
- Gargantuan Squiggoth -> Kill Rig
Orks may get one or two new vehicles (not refreshes) in their 11th Edition range, but I rather expect completely new designs rather than porting old Forge World stuff. Similar to Guard getting new designs like the Taurox and Rogal Dorn rather than pulling from their abudant Forge World designs.