Show on sci fie chanel?

i was suggested to watch thi show sanctuary and i see on amazon 2 of the seasons are on dvd.the third you have to register to get an email to know when it comes out on dvd.so my question is that is this show still on sci fie with new episodes?we dont have sci fie chanle on our satellite package so i had never even heard of this show.iv read reviews on it and seen what its about and it sounds good.i just would like to know if it is still a show with new shows being made so that once i get the email saying season 3 is out i can check to see if there will be a season 4.