Yup, USB 2.0 going by way of the dinosaur... I very highly doubt they will manufacture a Thunderbolt reader though... Apple is very closed off to others using their interface, you won't see it on any other camera manufacturers hardware.
Someone needs to knock up a sata adapter for this, shouldn't be that difficult. Most PC's can hot swap sata these days and theoretical speed is in the range of 6T/sec.