It's doing ok where I am, there's still a small group who play it that I know of. There used to be a huge 40K following and our local store has this enormous stock, but when 7th Edition was released most of everyone who played dropped off, including myself. I rarely get the chance to play now, and if I do we play 6th Edition. None of us are willing to throw down the money for the new rulebook or even the starter set when it costs so much.