Otto announced on the WordPress Development Blog two new additions to the WordPress Plugin Directory.
First a pie chart has been added to the stats tab of each Plugin that breaks down which versions of the Plugin are currently active on WordPress blogs (example pictured to the right).
Regarding the version data, Otto said:
Note that the version data is relatively new, so we don’t have it for all plugins at present. It will get better as reporting continues. For those interested, it’s saving the total counts of the version numbers as reported by the plugin update-checks over the last week. Since the data at present is only from one day, it’s not very accurate.
A stats API has also been created so that Plugin statistics can be pulled out and displayed elsewhere.
For more on the updates, and to discuss the progress, visit this thread on the WordPress Development Blog.