Even tho Sony showed the new memory cards at the E3. The developer still hasn't commented on wich format the new cards will be. It sturely isn't Pro Duo like the original PlayStation Portable, but its also not quite the same as regular SD-cards.
For now the only thing we do know is that the memory cards will come in 4, 8, 16 or 32GB. We also have a nice picture of them, wich you can view below.