The first official release 'th1' was promising something better. It didn't deliver and Windows Update was a disaster, it wasted 3GB of my cellular data. It downloaded complete ESD, then deleted it.
The second official release 'th2' (aka 1511) didn't fix major problems. Hardware manufacruters hold production, waiting for Microsoft to fix Windows, they are selling Windows 8.1 machines for now. Many people are reverting to Windows 7.
The third official release 'th3' (no release date yet) will be critical for Microsoft. They put everything on the scale to gain momentum on the phone and tablet market. If they don't deliver, they will lose desktop users too. They put desktop users on strain, as what is good for tablet is not good for desktop and in reverse. So be nice, Microsoft, let users decide how to handle updates and solve various privacy issues.