VideoCardz scored a photo of the NVIDIa GM206-300 die, the chip that will be used by the upcoming GeForce GTX 960. Unfortunately, we still don't know a lot about this card but it seems it will have a 128-bit memory bus with 2GB GDDR5. Sometime after launch there are expected to be 4GB models as well.
We will cut the speculation here, and confirm that GTX 960 will be equipped with GM206 processor. The exact variant is GM206-300, which could be the full chip.
We still don’t know if the Maxwell architecture changed in any form, so we can’t be sure if the GPC in GM206 will hold the same number of SMMs. However judging from the size of the die we are looking at something in-between 8 and 10 SMMs (1024-1280 CUDAs).