Oops…late to report but its true. Those who were tired of sick and not working WordPress Themes Viewer which had no new theme for past 1 year or so, can now be relieved because WordPress has a new Official Themes Directory – at WordPress Extend. Just like Plugins directory, Themes directory works almost the same. Just login into WordPress Support and access the Themes directory here.
WordPress Designers, you can upload your theme via here.