Visa International is owned by all financial institutions that distribute Visa-card products: including Bank of America, Chase, Citibank, Target National Bank, etc. I would think that the companies with the largest customer bases (a la Bank of America) will be the first to showcase the updated design. Cards that are due for renewal within the summer / fall will probably have the new design and logo.
I find the new card design to be reasonably attractive but I would like to see how it looks on the card, with the actual design.