From the link: "In a couple of weeks, once we've ironed some bugs, smoothed some edges, and given those people a chance to try Ghost out... we'll be opening up

From the link: "In a couple of weeks, once we've ironed some bugs, smoothed some edges, and given those people a chance to try Ghost out... we'll be opening up Ghost to the public. The Github repository will go public, and everyone will be able to sign up for an account on Ghost.org."