Probably been answered but I searched all over the Forums and surprisingly didn’t see anything. And as little as I’ve used sets for the longest time maybe it’s been there and I’ve never noticed but even LE Tools doesn’t show anything.
I’ve seen it confirmed in some thread quite some time ago that this is a leftover from when they were still making sets and then decided to stop adding new ones until they could revamp them (which was set affixes).
Seems strange that it’s still in the filter. Should have been easy to remove that reference there, even if the old files are still around.
Mike confirmed that at least one new set will make it to the new season, possibly more. But at least 1 is confirmed.