each time we release, we update the blog post like this one...
http://scalate.fusesource.org/blog/releases/release-1-4-0.html

then copy the relevant markdown into here...
https://github.com/scalate/scalate/blob/master/changelog.md

then make a plain text email to send to the mailing list...
http://groups.google.com/group/scalate/browse_thread/thread/5c02e49f2b9a18e4

all of which has the same generic shape (template) the only thing that really changes is the version number, URL of the change log and the markdown text section.

I wonder if we can hack up a little plugin that does this work? generate the HTML file for the blog post, plain text and auto-prepend the changelog? Am sure other projects could reuse it too?