But they need to roll it out or will they take-off out of the hangar?

Thats why i said start of Ground testing leading upto the First Flight , i doubt their would a big event (like the official rollout) when it comes out complete .

Regarding being optimistic , boeing’s position on the 787 would be clear in a few days when the new head of the program gives his assesment, i have worked with him , he is a good leader.