Maybe ,later this evening or tomorrow at the latest I hope.
Well for me there is one big thing that makes me go the "Win-10 route". DirectX 12.
And a minor thing is the look of desktop and windows in 10. I like it a lot more than the look in win8/8.1
But it will be a shrunk Windows 10 I will get. In Denmark, there is no Cortana (and there will not be for a long time recording to Microsoft), and we can't get a date for, when Windows 10 is ready for us in our language, properly "sometime in August" have I read.
Beside of the above, I really don't think there are many differences between win8.1 (fully updated of course) and Windows 10 for us who don't have or use touch or Cortana or "modern apps".