According to xbitlabs, a 7600 class graphics card is coming to AGP and has been indirectly confirmed by Nvidia. They go on to mention that Nvidia's latest forceware 91.28 drivers has support for an AGP 7600GS, which goes a long way to confirm that this is indeed true.

"The GeForce 7600 GS graphics processor has 12 pixel shader units, 5 vertex shader units, is clocked at 400MHz and comes with 256MB of 128-bit 800MHz GDDR3 memory. Specifications of the model 7600 GS for AGP 8x are unclear. In addition to the GeForce 7600 GS for AGP, the new beta ForceWare drivers support some other unannounced products, such as the GeForce 7500 LE for PCI Express, GeForce 6800 XT/XE/LE for AGP and PCI Express as well as GeForce 7800 GS for PCI Express."