Every where I have checked, has stated that black ops royale should be available.
News sites, the blog, even the road map lists black ops royale as being available for quads. Only thing I can think of is it being weekend only (which wasn't marked on the roadmap…) or you needing to have 4 people in a party to start it (which is stupid). I even have a screen shot showing it. I have even tried redownloading the whole game, and it hasn't appeared.