Their aim is to create a RTS similar to Starcraft2 or Dawn of War, and they are making good progress towards this goal. Currently you can even download the alpha binaries for Linux64bit and windows 32bit.
Very interesting is also their approach to create a tile based 3D map system, for which some examples can be found here. They are also plan on using Blender3D as their content creation tool, which is cool ;) Not so cool is that only the source code is GPLv3, while the data is CC-NC-ND >:( Edit: They plan on releasing the data also somehow under the GPL... lets wait and see how exactly. Edit2: After some discussions I was able to convince them to license the data under CC-BY-SA and GPLv2(or later)... really awesome!