As shared by some of the authors of the books, it seems like something is holding up the release of more novels in the Fandemonium Stargate series.
Apparently there is at least one book that is finished and ready to go (and has been for a while now), but there is something preventing it from going ahead. I'm assuming it's some sort of licencing issue, especially considering that the fan game Stargate Network was C&Ded when Timekeepers got the go ahead. (Still yet to finish releasing a full game on that one.)
MGM still pulling the old move of sitting on the IP without doing much with it.