Netflix announced that season 10 of Supernatural will start streaming on Oct 7, 2015.
Yes, they are holding the streaming until the day that season 11 starts, so there won’t be a lot of time to catch up before the premiere, but it will be great to be able to rewatch Supernatural whenever we want. YAY!
Check out the complete list of Netflix additions (and deletions) in October at CNet.
Additional Source: Seat 42F