I don't know if I would agree with "done" but it's a lot closer then the last pictures they released.Sounds like the Red Hot P5 is done, being fine tuned by IAV, and ready to roll to the LA Auto Show. That is my understanding from the email. The P5 Reveal: November 19th 10 a.m. (Pacific Time)
They state reveal in 15 days; figure 3 days to get there and make ready which is usually the 2 days before the show opens.
So they still have 10 days to do whatever is needed to finish; that is a good amount of time to have to work on it still.