The radius targeting is more granular than before, and is now available in kilometers as well as miles. When setting up radius targeting, you can set it up in 1 mile or 1 kilometer increments, and up to 500 miles or 800 kilometers. Before, you were only able to to reach the radius ceiling of 5 to 10 miles and then went up in 10 mile increments.
Also, now you can use location targeting (such as a city) and radius targeting in the same ad group or campaign instead of having to choose just one or the other.
If you want to select or opt-out of geographic locations, the visual map will now display both included and excluded areas. From the map control window, you can now even control geo-targeting as well.
The updates included in the post are available in the latest version of Bing Ads Editor and the V9 API.