It's been reported there was a new set of slot cards issued with a Valid 2021 on the back in all levels except for the base Copper level that were added to the guides as the 13th issue from the Casino of the Sun & Casino Sol in Arizona. So far we do not have any scans of any of those cards for the ChipGuide.

Now there is a new Copper level with the same reverse logo as was on the 12th and 13th issues but NO valid date. Here's a scan of the latest card...