I hope it is 8W. The locomotive is very complicated and it's hard to do it justice without going 8W or 9W. It is still possible to have steam locomotives navigate R40 curves at 8W or 9W, I do it all the time with my trains. I hope that they will limit the passenger car to 8W though, even though the ideas submission had a wider car. 8W passeneger cars are the sweet spot IMO for 1:48 scale trains. Seeing that this set will be the spiritual successor of the Emerald Night, I can't wait to see what detail they pack into it.