During Chinese new year, it's next to impossible to get any serious hardware shipment out of Asia.
Geforce GTX 560 is a fully enabled GF104 core with all eight clusters turned on and we used to call this card GTX 475 before. Nvidia thinks that calling it Geforce GTX 560 is a better idea and that it will be a worthy replacement for the GTX 460.
The card is faster than the GTX 470 and promises great performance in the $199 market. Nvidia lacked competitive products in this price range, so the new card should put more pressure on AMD's Radeon HD 6870 in this market.