The delay in releasing the new episodes should be justified by the quality of the season as a whole, as it sounds like a lot of work is being put into it, and the producers really have some serious plans for the show’s future. “Outlander” already started out strong with its first season, and it’s evident that the people behind it have every intention to continue its success.
The premise of the show and the execution of all its details have been done very well so far, and the showrunners have a clear sense of direction with what they are doing. In just one season they managed to captivate their audience better than many shows have been able to in much longer.
If the producers really were planning to bring out the next season in the fall but then pushed it back to the spring of 2016, this could be because they’ve suddenly realized the importance of the project and how much attention there is towards it.
They may have had some more ordinary developments planned for those episodes but then ended up changing their minds once they saw how much popularity the show has, and this is one of the main points of speculation that some fans have been bringing up in their discussions about the show on the Internet.