Create Changelog for the Commons
I was looking at the Changelog for Diaspora* (https://github.com/diaspora/diaspora/wiki/Changelog) and thought that we could use something like this to provide a thumbnail description for users of what has changed on the Commons from version to version. Maybe your dev updates already cover it, and we just need to create a single page on the dev blog that collates them. It would be cool for people to see how the site has developed from version to version, even if the number of people who might check that out is relatively few. Diaspora includes a "What's New" link on its site that links directly to the changelog.