Graphic cardz orientated news organ Videocardz exclusively revealed photos and some "confirmed" details of the Nvidia Maxwell GM206-300 and GeForce GTX 960 this weekend. It also claimed that shipments of the graphics cards have been sent out already and some press releases concerning these SKUs are subject to an NDA which lifts on 15th January.
According to Videocardz the official variants of the Nvidia GeForce GTX 960 graphics cards will differ only in the amount of RAM installed. It expects initial launch products to be equipped with 2GB of GDDR5 RAM with 4GB versions following in their wake. They will all be based upon the GM206-300 graphics processor. Of course manufacturers will implement their custom coolers and so on to try and differentiate their products.