ATI Technologies" next-generation visual processing units (VPUs) have passed validation process at PCI-SIG, the industry body that leads the development of PCI and PCI Express busses, which means that the chips already exist in the final revision and are production ready.
According to the current PCI Express Integrators List, ATI"s R520, R520 GL, RV515 XT and RV530 XT chips for desktops have successfully passed validation procedures. Additionally, the list indicates that there are new mobile products from ATI Technologies, which are presumably based on the new R520 architecture and are made using the same manufacturing process, on the pipeline: M52GL, M54GL, M56 and M58, which are also officially PCI Express compliant.