Game Of Thrones Prequel – HBO Spinoff Status & Premiere Date Post author:TVReboots Post category:Game Of Thrones / TV Show Prequels / TV Show Spinoffs Tags: Game Of Thrones, Game Of Thrones TV Show Prequel? You Might Also Like Riverdale Spinoff on The CW – Katy Keene Status & Release Date May 7, 2019 Christina on the Coast On HGTV- Flip or Flop Spinoff Premiere Date, Details April 11, 2019 Black-ish Spinoff Ordered By ABC – mixed-ish Premiere Date, Details May 9, 2019