The Mk. III habitat is still in Florida being completed by a friend who was interested in helping with the project. It'll be shipped when complete. However it's currently freezing cold outside, and I don't see myself deploying it until the weather warms up significantly.
Until then, don't forget to follow Project Earth Rover, which is what I'll be keeping myself occupied with until it's warm enough outside to continue with Hampture.
Those who are just finding this blog and curious whether anything's been done yet, the answer is yes, the prototype habitat was deployed in a lake some time ago for five hours. You can view the video of it here. It's the larger, multi-room habitat that you're waiting on, and that'll be a while.