October 6 is the official full release date for Prison Architect from Early Access on Steam.
Introversion will be releasing the first four chapters of a new story mode and well as a new Escape mode in which you will try to escape. Surprisingly enough.
For those who have never played before, Prison Architect is essentially a building simulator all about the delight business of building correctional facilities.
Worth a look if you are after something that little bit different.