I read it at Eileen's Yamaha Keyboard Players website. In fact, she confirmed what someone else said.
Has Yamaha confirmed this about the keybed in its SPECS I would assume if it was improved they would state it as a upgrade in their feature list on the S970? or is it that people just feel something different because of its "newness" vs a used keybed?......I would have to personally play one to be sure but I highly doubt it....