Firstly much of what can be said about the draft serving has been said on the bottle review here.
But the distinct differences are;
Not such an impressive head on draft. The serving temperature seems to dampen the carbonation. Also, in terms of the color, on draft it appears to take on the look of the Sweetwater Blue, with that very noticeable, light green tinge to the yellow body – very unusual. Still massively drinkable though. This should be HUGE in Atlanta through the hot summer of 2005.