Naw, stainless steel would be too heavy. A magnesium alloy or aluminium case (very light) would be awesome...but way hard to mod. It won't be bigger, the components don't get noisier the more powerful they are, because none of them have moving parts! The only thing with moving parts are the HDD (which it probably WILL NOT have, argh) and the DVD drive, which is not noisy anyway. Fans will most likely be quieter because they realize theese ones were WAAY too loud. Size will remain the same or smaller.