The way I interpreted this news was that Nikon will not be moving forward with developing and manufacturing new models of any SLRs and DSLRs, but that at least for the time being they will still keep some of their current lines of bodies and (maybe? F-mount lenses) still available, and may or may not run one or two through the factory process another time or two before retooling everything to continue moving on into the mirrorless future. However, yes, for the most part items now are only going to be available as long as inventory lasts. As time goes on, though, vendors will find that they aren't receiving any more of a particular body or lens and eventually it will quietly become permanently "out of stock."
Nikon's main focus from now on, unsurprisingly, will be on the development and manufacturing of current and new mirrorless bodies and lenses. This makes sense, of course -- the only problem is that they still have a lot of catching-up to do, as both Canon and Nikon came a little late to the mirrorless scene.