It comes with it, but you don't have to have it on. The length on the main cast iron top is a fair amount longer than the old TS200 anyway, and I have sort of assembly table I use as outfeed anyway, so I choose not to attach it.
The blade is positioned slightly towards the back of the table, but is there is almost the same amount of fence at the back of blade arbour as there is before it. Not sure of the measurement, I could find out.