Just to clarify we do not have any plans to release an oscilloscope with a USB3.0 interface in the near future.
We have put a lot of time / effort into ensuring that the USB link between the scope and the PC is not a bottleneck. Other than high speed streaming applications where you need to collect more than 1 billion samples moving across to USB 3.0 will not have any significant advantages.
Its slightly off topic, but PCs need to improve in other ways in order to make full use of USB3.0. Conventional and some SSD hard drives can not always keep up. Most PC processors are not fast enough to do any serious number crunching even at USB2.0 speeds.