Finally we updated the Source Forge files to Beta4 and did a quick hotfix on the ftp.horde3d.org files. So now there is only one and consistent Beta4 package available based on revision 188 of the SF SVN.
The community branch will be updated to Beta4 within the next two weeks (if nobody at the university will disagree with this plan).
After that it would be great if people who maintain the other language bindings in the CB can update those bindings too.
Thanks for all feedback and bug reports. And don't hesitate to write tutorials and code samples in the wiki.