According to news we gathered from various sources, AMD is slated to announce their new 900 series of North bridges chipset for their desktop platform. The 900 series is quite similar to the 800 series, it supports the AM3+ processors. It is also suggested that it will have Hypertransport 3.1 support as opposed to Hypertranpsort 3.0 on current boards. There will be no USB 3.0 support in the South bridge as yet. Motherboad manufacturers have to rely on third party chipsets such as the Renesas to support USB 3.0.
The 900 series Northbridges are:
AMD 990FX – two PCIe 2.0 x16 slots (or four PCIe 2.0 x8), six PCIe 2.0 x1 slots, one PCIe 2.0 x4 slot
AMD 990X – one PCIe 2.0 x16 slots (or two PCIe 2.0 x8), six PCIe 2.0 x1 slots
AMD 970 – one PCIe 2.0 x16 slot
The 900 series Southbridges are:
AMD SB950 – four PCIe 2.0 x1 slots, 14 USB 2.0 controllers, PCI bus, six Serial ATA-600 connectors with RAID 0, 1, 5, 10 support
AMD SB920 – two PCIe 2.0 x1 slots, 14 USB 2.0 controllers, PCI bus, six Serial ATA-600 connectors with RAID 0, 1, 10 support.