We have some more information about ATI's future chipsets. These are ATI's response to the move to PCI Express, and will compete with Nforce 4 standard and Ultra and Via's K8T890 chipset.
Radeon Xpress 200 G and non G will support all socket Athlon 64/FX and Opteron CPUs, dual channel memory, PCIe 16X + four PCIe 1X slots, PCI slots, eight USB ports, AC 97 audio, four S-ATA drives, two parallel ports and Raid 0 and 1. As you notice, it doesn't have any LAN support even though Nvidia and Via do support this feature.
So ATI has two chipsets on the way - one with integrated graphic and one without. At least for a time, ATI will remain alone in the integrated PCIe area and its chipset will provide quite powerful graphic power, for a chipset of course. It is based on RV370, X300 core and it will use UMA (unified memory architecture).