The PCI Special Interest group, responsible for the PCI family have announced the release of "PCI Express 3.0 standard" that promises to make future hardware "fly."
On the PCI-SIG website, they describe PCIe architecture as being "interconnect attributes, fabric management, and the programming interface required to design and build systems and peripherals."
While PCIe 2.0 standard performed at five gigatransfers per second on each PCI Express lane, twice the amount over its predecessor 1.0a. The 3.0 standard comes equipped with 8 GT/s -- an impressive upgrade.
The upgrade equates to 1GB/s bandwidth per lane which means 16GB/s for the high performance graphic cards which usually use a x16 slot. PCIe 2.0 is capable of 5 billion transfers per second whereas, because of the upgraded bus-based clock and an update from 8/10-bit to 128/130-bits (of data sent each second), it means 3.0 is capable of 8 billion GT/s.
The first PCIe 3.0 on controller chips or motherboards is likely to come in 2012.