Installed W10 on my Linx 10 W8.1 tablet to see how it looked, I had never tried any of the previews so this is my first impression.
Installed perfectly, didn't even ask for my product key.
For desktop PCs it looks great.
For tablets? I think it's a step back, to the point where I might take the Linx back to 8.1.
I hated Metro on a PC but on a tablet all those swipe gestures worked great. It was fast and easy to navigate. Go straight to the last running program? Swipe from the left. Bring up IE taskbar by swiping up? Go back a page in IE by swiping from the left?
All gone.
Swiping from the left now brings up all running programs, which you used to be able to do by swiping from the left an inch and stopping. Now there is no option. IE has been replaced by Edge which as far as I can see has no tablet mode, just tiny buttons too small to quickly and comfortably hit with your fingers. And its task bar and URL now don't vanish. And swiping from the left does nothing, to go back a page you have to hit the tiny back arrow.
I'm in the amazing position, after recommending Classic Shell to fix W8 on a PC to now hope they make something that brings back W8s swipe gestures. For tablets W10 does, at first glance, seem to be a step back.
But for my main PC I will definitely be installing it.