When NVIDIA lifts the NDA on the GeForce GTX 460 you can expect an overclocked "Cyclone" edition from MSI. This model has a non-reference cooler and features a 50MHz overclocked GPU.
The incoming GF104-based card boasts 336 CUDA Cores clocked at 1350 MHz, a GPU frequency of 725 MHz (675 MHz stock), a 192-bit memory interface, 768MB of GDDR5 VRAM, dual-DVI and HDMI outputs, plus a fansink that should look like the one below. Expect the N460GTX Cyclone 768D5/OC to cost a bit more than the reference GTX 460.
A picture is unavailable at this time but the cooler should look a bit like this model: