Publicly available, hosted by MS:
http://msdn.microsoft.com/en-us/windows/apps/br229516
There are downloads for 64- and 32-bit versions, with or without dev tools.
Originally Posted by
Microsoft
System Requirements:
1 gigahertz (GHz) or faster 32-bit (x86) or 64-bit (x64) processor
1 gigabyte (GB) RAM (32-bit) or 2 GB RAM (64-bit)
16 GB available hard disk space (32-bit) or 20 GB (64-bit)
DirectX 9 graphics device with WDDM 1.0 or higher driver
Taking advantage of touch input requires a screen that supports multi-touch
To run Metro style Apps, you need a screen resolution of 1024 X 768 or greater
I installed it on a virtual machine, wasn't too thrilled. These days I'm mostly running a separate Linux box for my personal stuff, then a Windows box for all my gaming needs.
Software efficiency halves every two years, thus compensating for Moore's Law.