Microsoft just launched consumer preview for windows 8, Which is more advanced windows and having many rich features in it.

System Requirements

Windows 8 Consumer Preview works great on the same hardware that powers Windows 7:

  • Processor: 1 gigahertz (GHz) or faster
  • RAM: 1 gigabyte (GB) (32-bit) or 2 GB (64-bit)
  • Hard disk space: 16 GB (32-bit) or 20 GB (64-bit)
  • Graphics card: Microsoft DirectX 9 graphics device or higher
  • To use touch, you need a tablet or monitor that supports multitouch
  • To access Windows Store and to download and run apps, you need an active Internet connection and a screen resolution of at least 1024 x 768
  • To snap apps, you need a screen resolution of at least 1366 x 768

Download:

English

64-bit (x64)                    Download (3.3 GB)

32-bit (x86)                    Download (2.5 GB)
Product Key:   DNJXJ-7XBW8-2378T-X22TX-BKG7J

Source

http://windows.microsoft.com/en-US/windows-8/download