I don't get what is the future for MsPro? Are Sony going to continue to use it or will all future products requiere Duo?
I am asking because like many, I am contemplating buying a big 1gb memory stick.
According to Sony, the Duo format is intended for "ultra-compact and wearable devices." There's no discussion of it replacing the standard Pro format. You can read more about all the MS formats at http://www.ita.sel.sony.com/memorystick/features_01.htm . Yahoo! search is your friend.