Notes
Forever addition. Blizzard: 'The final route begins with the Steamwheedle Cartel in Tanaris, pointing players beyond known shores toward the Riverglades' and Powderfuse Port 'ties directly into the new Steamwheedle route'. Wowhead: 'faction neutral goblin boat'. Riverglades (contested, mid-30s-40s) sits east of Redridge/Burning Steppes/Badlands. Map coordinates for both docks are unpublished (Steamwheedle Port is on the Tanaris east coast at about 66,22 in Classic, approximate).
Confidence note
Confirmed-official