The Center for History and New Media at George Mason University has released Omeka 0.10 Alpha. Omeka is used to provide access to digital collections and exhibitions (see the About page).
Here's an excerpt from the announcement:
In this version we’ve updated to a powerful new data model based on an unqualified Dubin Core standard. We’ve also improved the theme and plugin APIs to work with that data model and make it easier for plugin and theme creators to work with Omeka.