A new novel that is due to be released in January 2018 will bridge the gap between the Arrow Season 5 finale and the premiere of Season 6.
The novel, which had details first announced on Amazon.com today, is called “Fatal Legacies.” Here’s the description:
The untold story bridging between ARROW seasons 5 and 6, exclusive to this novel! In the devastating aftermath of season five, Team Arrow must resume their mission to protect Star City. Those who have survived Chase’s trap on Lian Yu discover that his plans did not end there. If his legacies aren’t stopped, countless more will die. Co-authored by Arrow series producer Marc Guggenheim and James R. Tuck (Robin Hood: Mark of the Black Arrow).