Cannot answer your question directly, but I can tell you about mine. I ordered my Sunseeker 3050S and the order was placed with the factory at the end of July, 2015. The original estimate for delivery was 6 to 8 weeks, and later changed to be September 15 to 20th.
Today, the 18th of September, the dealer called me and said that my estimated delivery date is now October 15th.
The reason for the delay is long and is explained in other posts on this forum. It involves the E450 Ford with the new 6 speed Ford transmission. Seems like this combination caused a vibration in the drive train around 60 mph. Production ground to a halt until the Ford and FR engineers could come up with a solution. After the problem was solved, production was backed up and all the units had to have the "fix" installed, including my coach. At least I am getting a unit that has been "fixed", I don't envy any owners whose coaches shipped out from the factory before the problem was found.
Out West Somewhere
2016 Sunseeker 3050DS towing 2006 Hummer H3