Several new things...
I've made some major changes to both the build scripts and packages of the xfce goodies; instead of one large package containing all of the goodies, they are now built and packaged separately to allow more fine-grained control over what's being installed on the system.
I'm tentatively declaring success on my project to get the gnupg integration and kmail working properly; based on my preliminary tests, I am able to successfully decrypt both my own sent mails as well as encrypted mails sent from others. Both the build scripts and packages are available, and testing/feedback are encouraged. :)
We seem to be creeping closer to the 11.0 release of Slackware; it's been at Release Candidate 4 for a couple of weeks with only a couple of non-minor changes since then, so here's hoping :)