The CW has renewed Reign for a fourth season, as was announced yesterday.
http://www.ksitetv.com/arrowflash-spinoff/the-cw-renews-everything-for-2016-2017/101699/
Plus;
Arrow
Crazy Ex-Girlfriend
DC’s Legends of Tomorrow
The Flash
iZombie
Jane The Virgin
The Originals
Reign (YAYAE!)
Supernatural
The Vampire Diaries
The 100 (Very good show too!)