I had some trouble getting twisted to work with the newly implemented WSGI support, so I started over, this time making bigger changes and separating ZServer and ZPublisher even more from the start. The resulting bigger changes means that I have decided to make also the WSGI support optional. This in turn means that I have no problems in adding this to Zope 2.10, and will do that later today or tomorrow. We can the decide on wether WSGI will be default or not before the release. The change will be done within zope.conf, with a simple use-wsgi on(off option to the http-server. I'll also include the twisted zope.conf statements. That means that even if we don't include twisted in the release, using it will be simple (just a matter of installing it and again changing zope.conf).