The wonderful pkg-zope Wiki page. Also see the website for more info: http://pkg-zope.alioth.debian.org.
Currently, Zope2 package for Debian is an ongoing effort. A Zope2 IRC Meeting took place to coordinate packaging efforts for Zope2 Debian packages. The outcome of this meeting defining how Zope2 will be packaged is available there.
About packaging the ZTK. Please read this page before uploading any packages, besides of Zope2, maintained within the pkg-zope team.