I already used the customer preview of the latest operating system from microsoft : Windows8. It works properly on my NEC Versa E6300.
actually this is still the costumer preview and will be publish in full version later this year. one thing you need to know is : you will not find the start button. i already used this OS for the last 4 months. and today i saw a very interesting thing on youtube : Office2013. and it makes the Windows8 looks better and better. here’s the video preview fro Office2013