Popo, it's mode 1 you described used on Alpha DSLRs. Go to a quiet room (or give it a try before you start sleeping, your hearing is more accurate then) and take a shot with a long shuttertime and no SSS. You'll hear the mirror go up and down, nothing more. Now, when you activate SSS, press the shutterbutton again, and while the camera is exposing, you'll hear some noise. That's the SSS working.
Interesting read. However, as David writes, it's only a suspicion, a thought. Nothing official yet. Nobody believed a full frame sensor could be stabilised, and Sony did it. Who knows, maybe they'll be able to pull off the 100% viewfinder. Not that it's such a big difference though, that 5%.
Photokina is coming closer!
- Bjorn -