That's a question for Mohammad; however, at the moment, I don't believe there's a kernel installed. You can see the packages in their gitorious home: http://gitorious.org/community-ssu - although I'm not quite sure that includes everything (e.g. there's no Modest in there with the proper quoting patches included from Bugzilla)

There's been some discussion (including with Nokians at the conference) about including a kernel. kernel-power is an obvious candidate, but without pulling in any of the settings utilities etc. Whether or not that includes the CPU speed bug fix, I don't know. As kernel-power can be installed for numerous reasons, I'm strongly of the opinion that the various user-friendly tools which allow overclocking need to display prominent warnings when exceeding 600MHz, even if they don't pull in kernel-power themselves.

Indeed, dpkg-divert is used in community-ssu-enabler to put a shim around /usr/libexec/apt-worker.

The problem with upgrading the Nokia components from Extras, and why an SSU is required, is that Application Manager (i.e. HAM) will not upgrade packages from different package "domains" which have different trust levels.

One of the primary tasks of community-ssu-enabler is to add the repository at an appropriate trust level, so that HAM will allow it to upgrade "system" packages. (In addition to installing the repo and GPG key).