Surprisingly, you’re only the second person to point that out.
No, it doesn’t affect the operation of the plugin in any way, and there are no new features there. It was just a page I added to show the available add-ons you can get here on this site. Somehow that file did not get included in the SVN repository and wasn’t uploaded to WordPress.org when the plugin was last updated.
I was out of the country for a few weeks, and then swamped with catching up since I returned, so forgot about updating that… not high priority since it doesn’t affect anything unless you try to visit that page.
Someone else recently sent me an updated translation file, so I’ll try to push that update out today with the new translation files and that one missing file.