Hmmm let me revise my prediction of the rMBP 13"
$1699 price
2.1Ghz Quad Core processor (i7-3612QM)
8GB of RAM
128GB SSD (256GB BTO)
GT650M discrete GPU (mated to iGPU HD 4000)
13.3 Sharp IGZO display
Thunderbolt port
USB 3.0 ports
HDMI port
SDXC slot
63 Watt hour battery
I doubt we'll see both quad core and GT650M. That's basically pushing the limits of a 15" laptop already, I don't see how they could do it in a 13". The Sony Vaio Z is a pretty good indication of what sort of specs can be shoehorned into a thin 13" notebook. It maxes out at the 2.1Ghz Quad i7 with no dedicated GPU.
My guess:
$1699:
2.9Ghz Dual-Core i7
8GB RAM
256GB SSD
$2199:
2.1Ghz Quad Core i7
8GB RAM
512GB SSD
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