Team cut in half due to lack of funds. http://www.bit-tech.net/news/gaming/2014/09/29/yogventures-substitute-tug-delayed-by-inves/1
I'm one of the backers for TUG and they sent out an email to the Kickstarter backers stating details about it. They had a funding option available to them, but it would have meant losing a lot of control over the project, so they declined that so as to retain full control. There is a new voxel rendering aspect coming into it that breaks away from the set 'cubes' that they had been working on and it looks great. It's a fun project that they've been working on, so I'm still optimistic that they can continue the project, secure proper funding from outside and greater sales and then deliver when they are ready. It was an agreed decision from the staff they had that they had to cut numbers in order to keep going.
In other news: Voxel 'game' engine developers rediscover the Marching Cubes algorithm, party like it's 1987. Euclideon continue to claim a Sparse Voxel Octree is an amazing new thing with no drawbacks.
Voxels are back in! http://www.bit-tech.net/hardware/graphics/2014/09/19/nvidia-geforce-gtx-980-review/3