Its being rumored that Logitech is developing an add-on UMD drive for the PSP Go portable gaming console, which has the ability to download content or transfer it to a memory card.
One downside to this mythical rumor is it would make the PSP kind of "bulky" as it would attach to the back of the PSP Go for all to see and make fun of.
Logiteck UK made a comment saying "they have no idea of such a device, but the US division may be developing something similar."
