Telltale announced on their website that, due to the "fundamental changes" (likely referring to the restructuring after a round of layoffs that happened due to a toxic environment that cultivated in the studio after the surprise success of the first season of The Walking Dead), The Wolf Among Us Season Two has been delayed until 2019.
They've stated that the reason for the delay is because they are "committed to exploring new ways to tell our stories. Taking this extra time will allow [them] not only to focus on quality but also to experiment and iterate in order to craft something truly special".
If this means that the gameplay will be significantly different than the cut-and-paste style gameplay that's been in Telltale's games since The Walking Dead, then the delay is certainly most welcome.