Sony is displaying 4GB and 8GB models of the Memory Stick Pro Duo cards in the 2006 Consumer Electronics Show. These cards will work with most Sony products, including the PlayStation Portable (PSP), which will enable the unit to truly become a portable media player. They are expected to be released later this year, but no specific date is set yet. When this is released the the PSP will be able to hold just as much content as the iPod Nano. The only disadvantage with this is the price. The 1GB card currently costs around $75 and 2GB card cost about $150-200. The 4GB card is expected to cost around $400 when it is first released and to drop later on. And finaly the 8GB card might cost $800! Also the PSP is not the only type of device that can utilize this. Many Sony HI-RES cameras (Sony DSC-R1 10.3 Megapixels) support this so that there will be plently of storage space, since such large photos may take up over 10MB per shot. Sony Ericsson Phones that play Mp3s will also support these cards making them more powerfull than any iTunes Moto ROKR phones.
Link: Memory Stick Info (CES 2006 Products) | Sony Home