It's the last shipment. Remember when woodsroad posted about his call to McClelland during which Mary NcNeil told him that they were tinning up the last stuff? This was the last stuff.
The only surprise was the Tawney flake. My understanding was that they only made that in 2006, which is why all of the tins have 2006 printed on them. If anyone bought any, I'd like to know if it's stamped 2018.