Though it's never been confirmed, there is scuttlebutt (great word...) that NC 20 would be the one where "San Francisco noir" would reappear as a kind of tribute to how the mega-phenomenon began for the FNF back in 2003. THE RAGING TIDE would fit into that with its SF locations (though Eddie himself noted that the bulk of the film is "not noir" when he screened it at NC/SF #1); but HIGH TIDE doesn't take place in SF, so it would be out of the running under such a scenario.
Also, HIGH TIDE has been shown twice already, so unless they're going to pair it with NIGHT EDITOR to pad stats for both those films, it's probably in mothballs for a while. (They could go with THE GUILTY, though, and pair it with GUILTY BYSTANDER...but Eddie's never put together the "JOHNNY" marathon as yet, which would allow the refurbished JOHNNY STOOL PIGEON to get its moment in the limelight along with JOHNNY O'CLOCK, JOHNNY ALLEGRO, JOHNNY ANGEL, JOHNNY EAGER, JOHNNY COOL, JOHNNY ONE-EYE, JOHNNY ROCCO, and JOHNNY GUITAR...and perhaps an episode or two of "Johnny Staccato" and "Johnny Midnight".)
But then there is the problem of where in SF to even screen a "San Francisco noir" redux version of NC. If the Castro is out, as seems to be the case, there's really only the Palace, which was subject to complaints due its location at the western end of the Marina District (very difficult for those without cars to make it there). But it would at least provide the seating capacity that has become part of the "buzz" of that show, and that would seem to be particularly desirable for the twentieth anniversary.