On September 27th, SearchEngineTigers.com published a letter from Google titled: Change In Support for Business Locations in which Google indicated that:

If you are currently submitting Business
Locations bulk uploads for inclusion in Google Maps via Google
Base, please begin submitting your updated Business Locations bulk
uploads via the Google Local Business Center found here:
http://www.google.com/local/add/uploadFeed

This change which adds the upload function directly to the Google Local Business Center, consolidates the business center’s function into one interface but could more importantly give the Google Maps folks more control over and review of uploads and potential spam. Let’s hope so.