>I'm confused this discussion and the download links refer to 2.1 RC. But the main page refers to Community Edition 2.1 being available! So which is it?
Both. The version that has just been released is Community Edition 2.1 Release Candidate.
>Also I can't find anywhere a simple and clear explanation of what the "Native Office Integration" is. Does it mean that I no longer need to install OpenOffice for document transformation?
No, you still need OO for transformations. The native Office integration is currently a plug-in for MS Word 2003 that facilitates check-in/out, search, workflow, etc. It's pretty impressive. I believe that other Office products and versions will be supported in future.
Regards