Office 2007 RTM
Office 2007 has been released to manufacturing! Having used the beta versions for the last six months, I have to say that this is a great product, and the most revolutionary Office upgrade that I've ever known.
If you've been using previous versions of Office for a long time, then you may initially experience the "where's that feature gone?" feeling quite often at first, but stick with it and I think you'll grow to love the Ribbon interface. I certainly wouldn't go back to Office 2003. Or Office XP. Or Office 2000. Or Office 97. Or Office 95. Or Office 6... or....