Halk will be an HTML presentation framework with facilities for including listings in slides and executing them in presentation time.
Halk is being developed and there is no public release yet. It's based on a working Perl prototype I have been using for some time.
New HTML Parser: The long-awaited libxml2 based HTML parser code is live. It needs further work but already handles most markup better than the original parser.
Keep up with the latest Advogato features by reading the Advogato status blog.
If you're a C programmer with some spare time, take a look at the mod_virgule project page and help us with one of the tasks on the ToDo list!