They have not run sales for quite some time, nor released any new designs for a pretty good reason. They have been selling more sabers than they can keep up with, and having a sale, or introducing a new model would drive the feeding frenzy even higher. I don't speak in an official capacity, of course, but I would venture a guess that when their new facilities are 100%, and their new personnel are all trained and ready to work independently, they will return to having those kinds of things on a more regular interval.
Kyntiri has hinted at all the wonderful stuff coming our way soon, and I believe 2016 is gonna be a banner year for SaberForge, as well as their customers!