Dream on...
Sure. As it looks like from today's viewpoint, for the forseeable future there will be no power-benefit from 90nm parts. That is for neither side of the competition. (Power-benefits will possibly be seen in second generation 90nm nodes
in 2005/2006).
OTOH, usually Core-Voltage comes down quite significantly in mature processes, at least for lower frequency CPU.
So a LV-130nm mobile Athlon64 is far more likely than a 90nm mobile CPU for next year. 1,1 V is targeted. Which would make a nice mobile part, if it would allow 1,6 GHz or higher operation. (0,8 V or so in powersaving mode @ 800 MHz).
But I dont expect this CPU to be on the market before next summer.
K.