I had a weird issue, Windows 7 updated, but, did not update, even though it updated and showed it as having been successfully updated. I kept receiving messages that would tell me I had to reboot before the updates could take effect. I did. They did not.
That's the 10 second version of what happened. Whatever the issue was, I decided if I had to reinstall windows, I might as well test drive Windows 8.
There's a few issues I ran across; mostly due to incompatible printer drivers. (What's new there? Same thing happened with XP and Vista). Actually, the printer worked; it's the much needed scanner that did not. I discovered audible.com was not compatible yet; their response was pretty much, "Well, Windows 8 isn't out, and so, we haven't figured it out". How annoying, but typical. To my surprise several online gaming programs worked. I play Word Soup that works; and BigFish.com games that all work. If you use Logos.com (Bible software) it works.
The Windows 8 experience was awesome for me, with exception of the two printers I tried getting to work (HP 6700 pro, I was assured worked, by the HP rep.; so, I purchased it. unfortunately, the scanner drivers did not. My 3 year old HP C309g of course did not, either).
I am planning to move over to 8 when it comes out Oct. 27th; esp since it will be only $40; and, yes, i will be paying the extra for the disc. $65 for a Windows Professional Upgrade disc? Oh yeah.
Btw, I've heard tons of people complain about the interface. There's definitely a learning curve. Things are not where they should be. It's geared for touch screens; but, I used my mouse and keyboard and never had an issue. Actually, with desktop view, I have to say, there's very little difference between 7 and 8. All my icons were where they were in 7 and Vista.