"The following changes and additions have been made to the Item Dyeing window:
-The category "Armoury Chest (Main Hand/Off Hand)" has been added to the item filter dropdown menu."

As far as I can recall, no main hand/off hand can currently be dyed. That includes shields. So why would they put a category for it in the drop down menu of the dyeing window? I can only assume we will get to dye weapons soon.