Supernatural apparently will be coming to an end soon, with season 15 being the finale.
Executive producers, Dabb and Singer, have released the following:
“Firstly, we would like to thank all the people who have been involved with the show both in front of and behind the camera. For us it has been an experience of a lifetime. The support we have had from both Warner Bros Television and The CW has been incredible. We'd like to give special thanks to Jensen, Jared and Misha for making this journey so special. It is now most important to us to give these characters that we love the send off they deserve.”