Intel plans to introduce Sandy Bridge and Cougar Point in Q1 2011 and this launch will feature the premium P67 and mainstream H67 chipsets, but unfortunately it appears these chipsets won't have USB 3.0 support yet. Full details about the upcoming 6 series chipsets can be read at VR Zone.
The P67 and H67 will take over the "Premium and Mainstream" market segment currently dominated by the P55 and H57 chipsets. This is necessary given that the future Sandy Bridge processors will be rolled-out on LGA1155 sockets, as opposed to the existing LGA1156 socket used for the Lynnfield and Clarkdale Core i3 and i5 (and also i7-8xx) processors.
To differentiate the products, H67 will support x16 PEG only, while P67 will support either x16 PEG or 2x8 PEG. Motherboard makers will no doubt get creative with these chipsets. On top of PEG expansion, both chipsets will support x8 PCIe 2.0, and 14 USB 2.0 Ports. No, USB Super Speed isn't on the roadmap just yet. 2 SATA 6Gb/s ports will be present on both these chipsets, out of the total 6 SATA expansion ports. There will not be PCI support with these chipsets.
Notable for the Intel H67 is the HD Graphics Support, which allows two independent displays, Integrated Audio Codec and Gigabit Ethernet MAC.