There will be a point release of the SP Demo 2 fixing a lot of niggles soon.
A singleplayer demo #3 will be released in June, with at least three maps by ijed, rjthorne and gb, excellent QC and gameplay enhancements by Supa and Lardarse, and elegant engine coding by mh. It will be slick, scare your pants off, be Quake, and break the usual limits.
It will also shut up any crap about how Quake RMQ is. Most people got the picture by now anyway.
Other stuff is going on beneath the surface, and interesting things can be expected that will be good for everyone, not just us.