The latest feature I have added is the ability to generate unique serial numbered labels. So far this is only on the single label layout, but this can be expanded in the future.
How it works is that you set up your serial numbers how you like; add a prefix or a suffix like the example above, pick your start number (required) and # of digits. You can set the font, size and weight here which will only affect the serial numbers in this batch. Set your label count and save to the list. When the labels are generated they will come out like this: