Pretty sure the rights have reverted, since Goodman Games -- not Necromancer/Frog God -- is
printing Judges Guild modules this coming summer. (Maybe not, though, since they previously published conversions for 3E as well -- maybe they've just sat on the rights for a looooong time.) And given that they Kickstart many of their works, I'm guessing they don't have the operating capital necessary to, say, just print off a bunch of copies of the Wilderlands, etc., on the hope that people will purchase it once it's available.
The good news, though, is that a Goodman Games/Judges Guild would seem likely, and they do a good job of adding extra value to products over the course of a campaign that way. (The recent Chained Coffin module ended up as a full setting complete with multiple modules in a single boxed set, for instance, to say nothing of the varying levels of cover art that came with the campaign.)