Yeah, apparently he asked for donations and no one cared so he decided to just release it to the people that donated.
This is such a huge advancement that I doubt this code will stay private for long. The only reward developers get is by releasing software and seeing how people enjoy using that software.
Many comments have been made on the net about this situation but at the end of the day, the code is not even finished anyway so why would people be bothered that he had not released it?
Let's just see how things pan out. People have pulled this kind of stunt in the past and it all worked out dandy in the end.