According to hkepc.com, reliable sources has revealed that the 6600 non GT AGP will be released on the 10th of January and will be on the NV43 with the BR2 HSI bridge, and factory default clocks will be at 300MHz.

the 6200AGP will be launched 2 weeks later, and will also be featuring the NV43 core with BR2 HSI bridge for a limited period of time. This means that the initial batches of 6200AGP might be featuring a 8 pixel pipeline architecture. Subsequently, Nvidia will be releasing the NV44A core to reduce cost, and this will only feature 4 PPs instead of 8.