Microsoft has released Office 2010 Release Candidate (RC) via its invitation process to the technical testers of beta version of Office 2010. If you are a member of Microsoft Connect, you can download it from Microsoft Connect page.

If you get an invitation email from Microsoft, you should give a try to Office 2010 RC Build 14.0.4734.1000 before this version going to general public. Office 2010 RC is available in 32 bit and 64 bit.

Download Office 2010 Release Candidate (RC)