It's good that Apple didn't include USB3.0 because it is already too slow. USB3.0 is only 5Gb/s, but the SATA III spec is 6Gb/s. So as the HDDs get faster, USB will again be the bottleneck. USB3.0 came way too late. We have SSDs now that will need 6Gb/s to operate fully. Thunderbolt (LightPeak) is the better solution because it is 10Gb/s, and there is a high probability that we will see a Thunderbolt to USB3.0 adapter. Which means you would be able to use USB3.0 devices.