Such a shame
Email just received from Hotpoint and they have confirmed, something I didn't want to know. And that's the 6KG new models WMFG651, WMFG631, WMFG611 do not have super silent motor, however I am told the wash is still quieter than older models, thanks to redesigning of the motor. He said the 1500rpm spin on the 6KG is 81db. Is that quite loud? (shame about this). They did say the 8KG models however do feature their super silent motor.
They apparently are exclusives to Comet, Curry's (inc. Dixons & Pixmania), John Lewis and Co-Op.