Windows8 Developers preview (pre beta build) sized around 2.8GB to 4.8GB in iso format is ready to download from 13th September, 2011 onwards.
Download Free Microsoft Windows8 pre beta build
Download Windows8 32Bit, 64Bit
Important Notes Before installing Windows8 pre beta build
- Files downloaded in the form .iso. So you need to extract from .iso to install this version.
- These are only beta versions of Microsoft Windows8, so you may face errors while working with this version. It is not as smooth as final version of windows. Be aware you should be ready to face even security threats.
- You should giveup present installations (all windows including windows7) before installing windows8.