It is quite sure that GeForce GTX 570 and GTX 560 will be released around Christmas and first quarter of 2011. These two graphics are derivative of GTX 580, with some stream processors missing. GeForce GTX 570 will be mounted with GF114 graphics core, while GTX 560 will have GF110 on board. GeForce GT 550 and 530 will likely be equipped with a successor of GF106 – GF 116.

Here’s a short note from InsideHW news:

One more time this will be an existing chip with all parts enabled, that will get more performance to the same price segment, and with some luck it should be enough to take on ATI in this market segment. Of course it’s a DirectX 11 part. The funny thing is that the new generation comes roughly two quarters after the official introduction of GeForce GT 450 based on GF106, a 238 square millimetre chip and we have a hunch that the GF116 will remain the same size, but it will up the shader number configuration from 192 (four shader clusters of 48 Shaders). In case that GF116 comes out with five clusters you can expect 240 shaders, but this is something that we cannot confirm at this time. The expecrted release date is sometime in February or March.

• READ MORE (Source): InsideHW – GeForce GT 550 and 530 to come in three months