Intel is preparing to launch several processors next year. For back-to-school, Haswell will return with new SKUs and a new 9-series chipset; in the holiday season, Haswell-E will arrive for high-end (high wattage) enthusiasts on the X99 chipset; and, just before 2015, Broadwell-K will be available for the mainstream 9-series desktop.
The specification, which more than triples SATA 6Gbps's "up-to 600MB/s" bandwidth rating, will not be validated for Intel 9 Series chipsets. Intel was originally rumored to be its launch partner. The host connector accepts connections from both SATA (up to two per host connector) and PCIe-based (one device, up to two lanes) hard drives. Two PCIe lanes provides 2GB/s of bandwidth.
It seems like the real benefit is to allow internal drives be connected with PCIe speeds through a ribbon-cable. Currently Intel has not given a reason to pass on the standard.