Although still in the prototype stage, USB 3.0 is aiming for 10 times the bandwidth of current USB2.0 solutions, or approximately 5Gbps. Since this requires fiber optic cabling, USB 3.0 will add a length of optical data cable to the mix, though USB 3.0 will retain full compatibility with USB 2.0 and, USB 1.0 as well.
Final version specifications to be finished by the first half of 2008,
with USB 3.0 peripherals realistically appearing in 2009 or 2010.