I have no way to confirm a date but my lhs told me 10/10/08 for the version 2. I was asking him about getting the 8ight race roller and he recommended waiting till then for the new one.
It surely can't be out that soon. That is before other kits waiting to come out - High Roller - L8ight - 8ight-E - Desert Truck 1/18 and whatever is also on its way