announced that Sony and Sandisk are developing a Memory Stick Micro (M2) format which will be available in the first half of 2006. This could be usable with the PSP via use of an Pro Duo adapter in the future.
“Memory Stick Micro” media is approximately one-quarter the size of “Memory Stick PRO Duo” media, yet only about 1.2 mm thick. The media’s edges are slotted lengthwise to allow for more slim-line designed connectors to reduce space in host devices. As dual-voltage media, Memory Stick Micro supports devices operating at 3.3 volts and 1.8 volts.
Memory Stick Micro is designed as an externally removable media with a controlled eject function to prevent users losing the media. Users will be able to insert Memory Stick Micro into an adapter for exchanging data to a Memory Stick PRO compatible product.
This is a pretty small card (Click here for size comparison) and could, in my opinion at least, be far too easy to lose or break. However, it is quite probable that this will drive down the price of current PRO memory sticks which bodes well for us PSP users.
Thanks to mahjustin for the info.