The taxonomy changes are a much needed housekeeping update. Sub categories will now be consistent across all main categories. This is important because users can now easily click among the various categories and subcategories and see related news. Digg is also adding a new main category, “Lifestyles,” that will include topics like Autos, Food & Drink, and Travel.
The images update will allow much easier image bookmarking. When a user bookmarks a URL and selects an image from the bookmarked page, a thumbnail will be auto-created for inclusion in the Digg post (very similar to how Digg Video looks today).