On the subject of the custom designs, I wonder if they will also be offered on the co-branded cards or limited solely to the "vanilla" card?
Edit: Also, just to save some folks from googling, here are some examples of
Julie Mehretu's works and of
Kehinde Wiley's works. Both are pretty distinctive and I imagine pretty polarizing in terms of style. I think it will be really interesting to see what the final result is!