I have been thinking that the Kindle in Motion format was dead since it was never officially announced by Amazon and the number of titles available hadn't changed in months. Today I see that one more title has been added to the Kindle in Motion list, bringing the total number of books in that format to eight.
Ripper: The Secret Life of Walter Sickert by Patricia Cornwell to be released Jan 15, 2017.
(Now due Feb 28, 2017.)