Alpha and Omega

Alpha and Omega is the season finale of Season 11. It will air on May 25th, 2016.

Summary
GOD VS. AMARA – God (guest star Rob Benedict) comes to a decision about Amara (guest star Emily Swallow) that has direct repercussions for Sam (Jared Padalecki) and Dean (Jensen Ackles).

Main Cast

 * Jared Padalecki as Sam Winchester
 * Jensen Ackles as Dean Winchester
 * Misha Collins as Castiel
 * Mark Sheppard as Crowley

Recurring Cast

 * Emily Swallow as The Darkness
 * Rob Benedict as God
 * Ruth Connell as Rowena
 * Elizabeth Blackmore as Lady Antonia Bevell

Featured Supernatural Beings

 * God
 * The Darkness
 * Archangel (Lucifer)
 * Witch (Rowena)
 * Demon (Crowley)
 * Seraph (Castiel)

Trivia

 * "Alpha and Omega" is a phrase that means "beginning and end" (alpha and omega being the first and last letters of the Greek alphabet, respectively), mainly used by Christians. It's also a reference to The Darkness, who described herself as the beginning and the end.
 * This is the 1st season finale to be written by Andrew Dabb, who will be also taking over as show runner for Season 12.

Spoilers / info
Source:http://ibelieveinthelittletreetopper.tumblr.com/post/122781295133/supernatural-season-11-spoiler-sheet
 * Dean is willing to sacrifice himself to save the earth.
 * Dean delivers the line “Alright, get your Casper asses out here!” And is reunited with someone.
 * There will be lots of plants in one scene. ( garden of eden ? )
 * Jensen and Misha have a scene together in Baby.
 * Also from the graveyard shoot: Cas and Dean share a hug in the graveyard, as do Sam and Dean
 * Crowley hands something to Dean wrapped in cloth (hand of god?)
 * Shooting was done with The Boys, Cas, Crowley, Chuck Rowena and possibly Mary Winchester at a cemetery. Baby was spotted as well as two ghosts.