On their facebook page they announced the release dates for some of their books.
One Fell Sweep (Innkeeper Chronicles #3) Dec. 15, 2016
Hugh d’Ambray’s book tentative date is Jan. 2017 (They will make my dreams come true if they write this book!)
White Hot (Hidden Legacy #2) June 2017
(Hidden Legacy #3) Aug. 2017
(Kate Daniels #10) tentative date is Nov. 2017