Supernatural season 13 will be released on dvd and blu ray on September 4. They will include all 23 episodes and the following special features:
Mystery Mash-Up: The Making of Scoobynatural
Into The Apocalypse: A World Without The Winchesters
The Winchester Mythology: Rise of the Nephilim
Kansas – Carry On Wayward Son: Performance at 2017 San Diego Comic-Con
Supernatural: 2017 Comic-Con Panel
Audio Commentaries
Deleted Scenes
Gag Reel