Microsoft Office 2010 Beta is available for free download at this link.
The free version is valid for a year – here is MS FAQ on Beta expiration
The beta version of Office 2010 will expire in October 2010. Users can choose to download the trial or buy the full version of Office 2010 at that time.
Some Observations :
> The download size is around 750 MB for 64-bit version.
> Instructed to remove existing 32 bit version of Office from the system. After removing existing 32 bit MS office 2007, The installation of 64-bit version was smooth.
What’s new in MS Office 2010 ?