Space Station 14 is a new game created by coders and artists from all over the Space Station 13 world, including SomethingAwful, TGStation, /vg/station, and BayStation. The goal is to make a worthy successor to Space Station 13, without being chained to an immutable commercial product like BYOND.
This horrid mess of a GPLv3 project is a result of that effort.
Space Station 14 is being actively worked on by a team of over 80 registered coders and artists.
However, due to the early age of the project and the amount of things needing to be refactored (graphics, buildscripts, asset pipeline, etc.), SS14 will not be stable for some time.