Hm, well...
Nueva Extremadura is missing the map, probably some mod support and making sure everything is working correctly.
The Tehuelche (collab with ldvhl I guess?) are missing... I'm not quite sure really, I guess actual compiling.
The Selk'nam have their Icon done as well as most research and XML work. I may need to double check the 'pedias as I don't quite remember if I wrote them down. I think the rest of the art ain't there either.
The Kaweskar are out of the planning stage but I must return to Uighur Caesar on that.
The Yaghan have their design settled at least and probably could get working on them relatively quick,
Pacific War Chile has their design settled and they do have a leaderscene, some xml and model hunting done already.
So the Tehuelche and Nueva Extremadura are the most likely to come out soon. After that it's any of the following others. Well, I also discussed doing Chiloe with GPuzzle but that one has real tricky LUA behind so I'm not holding my breath. They are collaborations more than "my own" civilizations, as LUA is not quite my forte and my art skills are even worser, but hey, at least I'm helping the civilizations I want to see get done.
I'll PM you with details for the icons...