Malte,
Emacs OACS will continue to see development. I'm in the process of re-creating http://www.thecodemill.biz.
For starters I'll make the tarballs available shortly. Next I'll publish a new GNU Arch archive of Emacs OACS.
Adding Emacs OACS to the OpenACS CVS is a possibility. However, I would want it to be a read only version. Having chosen GNU Arch as my revision control system I'm not in favor of going back to CVS.
/Bart