I just received a brief note that the Grand Lodge of Kentucky F&AM has recognized the Most Worshipful Prince Hall Grand Lodge of Kentucky F&AM. No visitation privileges were granted at this time. They are recognized as a sovereign jurisdiction only. But it's a good first step.
The Prince Hall Grand Lodge asked for recognition without visitation at this time.
This leaves Alabama, Arkansas, Florida, Georgia, Louisiana, Mississippi, South Carolina, Tennessee and West Virginia as the last nine remaining mainstream grand lodges that do not recognize their Prince Hall counterparts.