We've wondered for a while, but have we got so cemented in the ways of armies constantly being updated and an endlessly deep background that it has become impossible for a new codex to appear?
Yes, we've had marine splinters into many chapter dedicated codicies. But will we ever be enthralled by the release of Codex: Mechanicum or Exodite Eldar. Perhaps even a new xenos army to balance the amount of imperium codecies out there, perhaps an army to be the 40k equivalent of skaven? Will squats come back to represent sci-fi dwarves? Could we see the mysterious interex, arguably being a possible cause of the Horus Heresy, return with their cyber-centaur soldiers and laser bows? Or possibly a totally new army never before mentioned?
I believe a while back Jervis Johnson talked about space vampires that he was working on, and the blood angels had already been released before people rush to that conclusion. A grim-dark rendition of Vampire Counts possibly?
I don't mean to stir the rumour pot. Merely questioning whether you think Games Workshop would/should ever bring a new Codex to the 41st Millenium? Or is it a possibility that Forgeworld would be the innovators to do this as they did to chaos dwarves? I'm here to ask the questions. Would you like to give your answers?