This year, we will have a new faster peripheral connection by the availability of USB 3.0, peripheral interconnect technology that has been used by every users around the world. USB 3.0 is set to deliver a data transfer rate of up to 4.8Gbps - ten times today's 480Mbps USB 2.0 data rate - and introduce optical interconnects to the bus. The goal, the companies behind the specification said, is to create a version of the bus that's able to deliver files of 25GB or more (that's quite ambitious, but i believe it's common thinking, since multimedia files are being common thing and it's growing all the time).
The third version will have it's own name, called SuperSpeed USB and it will be backward compatible with the previous 1.1 and 2.0 version
There will be two connectors for the USB 3.0 devices, electrical and optical. You can look for the images below. The first one is the electrical and the second one (smaller) is the optical version. The third picture will show the diagram why it would be backward compatible with the previous version.