It's that our colleagues from TPU noticed it really, otherwise even we would have missed it. It seems that eVGA silently snuck out two cards. EVGA released the EVGA GTX 580 DS SuperClocked and GTX 560 Ti DS SuperClocked.
Bothof these graphics cards have a dual-fan ventilated cooler. The GTX 580 DS SuperClocked comes with clock speeds of 797/1594/4050 MHz (core/CUDA cores/memory effective).
The GTX 560 Ti DS SC comes with 900/1800/4212 MHz speeds. The GTX 580 model uses a high-flow backplate. The GTX 560 Ti DS SC is priced at US $219, and the GTX 580 model at $519.