Grimmsters, big news!!! I wasn't expecting this, and am gonna be cautiously optimistic, but per Variety.com, a Spinoff series to Grimm is reportedly in development by NBC! Further details can be read here: https://variety.com/2018/tv/news/grimm-spinoff-nbc-1202981306/#article-comments
To those who are Online Vote Grimm as your Favorite Supernatural Show.
The link is down below: