Nope, this isn't a Russian forum scam to lure you towards malware...
I don't know how long it will last, or how long it's been running but...
windows.microsoft.com/en-us/windows-8/preview
Click the 'Get it Now' button and choose the proper version for you (32/64 bit) - Be sure to take note of the product key (listed right where it says ISO files). Probably best with a spare drive too, if you aren't sure about migrating to 8 - You'll get the option any time to upgrade (IE buy) it from the preview, and it is fully functional no holds batted, till the preview expires. (which I believe is 120 days, but most of their previews also include a fused date killer which will also trigger doom by a certain date to prevent you from just re-installing over and over!). Yup - Give it a try and see what you think.
