Microsoft has announced that a beta version of Office 2010 next month for the general public will be released. This was announced at the SharePoint conference in Las Vegas. While the second seems to Office 2010 beta also works on a 32-bit and 64-bit system.
When installing the beta its required for you to enter the serial number found on the website. Microsoft also announced that it is sending more user invitations to the web version of Office for beta testing. In the future, and more new functions are added.