>The pattern is on the S model they fix or add something but >they don't change the sensor out. So it might be the D5 before >we see a sensor change.
That's mostly true, but there is a bit of light(pun intended) in the D3S, which appears to have added about half a stop. But I was surprised to find you are dead on generally, I thought the "S" actually did improve the sensors, but it doesn't look like it mostly.
So I'm either waiting for the 200-400/F2, or the D5, to get the 2-3 stops I really want?