El Reg has a review here. If you (for some strange reason) cannot wait until it is forced on you, then you can get the latest iso here:
However, before you leap into the dark, be aware that Microsoft is treating all ‘consumers’ as test guinea-pigs or ‘mine-clearing animals’ to ensure that the commercial versions are as stable as possible. El Reg link
[edit] The one aspect that interests me is the assignment of cores to processes. It may make Ryzen’s approach a lot more useful.