The Serial ATA International Organization has today made official the Serial ATA Revision 3.0 specification.
SATA Spec 3.0 Now Official; 6 Gb/sec. Speeds : Read more
SATA Spec 3.0 Now Official; 6 Gb/sec. Speeds : Read more
There really isnt even a non-PCIe SSD that's capable of current SATA2 specs. With current Sata drives, the fastest read spead I can find is 260 mb/s, which leaves quite a bit of headroom for SATA2's 384 mb/s max.
and i dont see any point in any desktop hard drive to have this spec either - they barely even reach the ATA100 spec under sustained read/writes