I am in a position in which I need to buy a powerbook now. I cannot wait for the 17s and need a bigger screen than 12s (so I'll likely get a 20" display too). I am interested in airport extreme capabilities in the future. The 15 currently does not have this capability. Does anyone know if Apple or a third party will make an upgrade in the form of a pc card that can be inserted into the slot on the left side of the powerbook?