You will soon see a new grading system for maple syrup. The new system is much simpler and helps consumers by adding flavour descriptors to the different colours of maple syrup. Basically there will be one grade; Grade A. Maple syrup that does not meet the requirments of Grade A will be marked as Procesing Grade.
Grade A will be diveded into four colour classes:
Golden maple syrup with a delicate taste
Amber maple syrup with a rich tsate
Dark maple syrup with a robust taste
Very dark maple syrup with a strong taste
You can click here for a smaple of the grades and furthur explanation.