Apple and Intel introduce a new technology on today’s released MacBook Pro. The Thunderbolt I/O interface. It’s an evolutionary step towards HD-VJing. To quote from apple.com:

“With 10 Gbps of throughput in both directions, Thunderbolt I/O technology lets you move data to and from peripherals up to 20 times faster than with USB 2.0 and more than 12 times faster than with FireWire 800. Two 10-Gbps channels on the same connector mean you can daisy-chain multiple high-speed devices and a display, without using a hub — and without reducing performance. […] Now you can create a professional video setup for your MacBook Pro, just as you would for your Mac Pro. If you’re a video editor, imagine connecting high-performance storage, a high-resolution display, and high-bit-rate video capture devices to handle all the post-production for a feature film — right on your notebook. Thunderbolt I/O technology allows you to daisy-chain up to six new peripherals.”

more techie info on intel.com: http://www.intel.com/technology/io/thunderbolt/index.htm