confirm" that prototypes of the new rumble Sixaxis are in the hands of "various Sony developers." They say that Sony could make the announcement about the new Sixaxis as early as Leipzig, or hold off until more games support the new features. Sony probably wouldn't want to make all those "rushed technology" stories pop up again.
Inner Bits also says that a new version of the Sixaxis is quietly replacing those currently on the market. Allegedly Sony improved "the fidelity of motion sensing" so now there isn't so much of a "dead zone." Of course this is all still currently rumor and speculation, but we are hoping that the Sixaxis will rumble this year.