If I was going to read into the sign replacement at all, I'd read it as the original sign saying it was closed to prepare for an HHN show being there while the replacement sign simply means there likely isn't going to be a show there, not that HHN just isn't happening (because, again, it is).
It's just a basic save face for later so when there's no show they wouldn't get questions like 'but the sign outside of FFL for three months said it was being prepared for HHN (a show)?'.
On the topic of shows in general, I'm not sure how I'd feel about them this year. On one hand they could possibly be useful tools for keeping the crowds spread and having one more thing for people to do outside of houses. With reduced capacity it'd be a place to disperse the entire crowd even thinner that isn't a house. On the other hand, even with reduced capacity would it be too much of a headache to keep a 'show' safe enough to be worth doing? Would it be worth the hassle as well? I can imagine angry patrons who've waited an hour for a show to start but end up not getting into the next showing because they're at the back of the line and only so many people are let into the theater area.
In all likelihood FFL would probably best be used as a U-REST (IN PEACE) area for the event. Maybe with a big screen that plays not a show but just clips from films spliced in with segments with some of the Icons. That way there's something to entice people to go in there and spread out but it's not an 'event' that everybody will NEED to go to and cram the place.