Yes, it seems that they re-implemented essentially all coreutils, and nearly all command line options on all of them. That's the reason why there are so many failures in the test suite, because some obscure option here and there is still not yet implemented. The main functionality of all the tools is already there. This is a huge project, and really impressive.

(as a side note, I did not want to turn this thread into a licensing flamewar, even if I dislike the license change. It is more interesting to talk about the tools themselves! How does the performance compare to the GNU implementation? Are they faster? Do they use less memory? Are the executables smaller (e.g., when compiled statically)? Do they compile faster?)