The guys over at PCGamesHardware have released some particularly noteworthy information regarding GeForce GTX 295's anti-aliasing capabilities.  According to the site's represented graph, the new cards, when used in dual pairs for Quad-SLI, are capable of rendering up to 64xQ full screen anti-aliasing.

To define the process of this capability, each individual GPU core calculates 16xQ FSAA and the results are combined and applied to the image currently being rendered.  It is important to note, however, that 16xQ full screen AA is not necessarily 16x multisampling AA but is essentially 8x MSAA with eight additional coverage samples, 16 in total.

Moreover, the effect of full 64xQ FSAA is only available on GeForce 185.20 beta drivers at the moment and neither game screenshots nor benchmarks have been released yet.