This was pulled of the nikon site. No mention of the SB800 or 600.
Flash Control TTL: i-TTL flash control using 91,000-pixel RGB sensor are available with built-in flash and SB-910, SB-900, SB-700, or SB-400; i-TTL balanced fill-flash for digital SLR is used with matrix and center-weighting metering, standard i-TTL flash for digital SLR with spot metering
TTL: i-TTL flash control using 91K-pixel RGB sensor is available with builtin flash and SB-910, SB-900, SB-800, SB-700, SB-600 or SB-400
Found this on the Nikon site, specification page.