AMD is reportedly set to unleash their first Radeon HD 7000M series GPUs for notebooks on December 9th. There are said to be at least 16 models to be announced, all based on two silicons: "Thames" and "Seymour", and are being carved out of toggling various components within those GPUs.
AMD will launch models across the Radeon HD 7400M series, 7500M series, and 7600M series. Thames and Seymour are brand new chips that are built on the 28nm silicon fabrication process, which will allow AMD more TDP headroom where they can ramp up the clock speeds.
At the moment, there's no details on things like stream processor, ROP, and TMU counts, but ComputerBase.de have compiled a list which shows GPU and memory clock speeds, memory interface widths, and memory type. The table also makes a mention of higher-end GPU models with names of "Chelsea", "Heathrow", and "Wimbeldon".