The Microsoft Office 2010 was all set to be released on 15th February, 2010 until it was announced that this suite will only be available for MSDN and Microsoft Connect Users. This suite is also available for public download.

Microsoft has already started to send invitation to users to test Office 2010 and along with that, they are also getting invitations to try out Office 2010 server, which comes with its retail product key!

There are no updates regarding when the RC version would be released for public download, but it is safe to expect it in near future, as Microsoft has the history of releasing (or leaking) their products before their official launch.

via