The CW has updated the official description of Supernatural. Beware of spoilers:
"The thrilling and terrifying journey of the Winchester Brothers continues with the eighth season of Supernatural on The CW...
Season eight begins with Dean’s seemingly impossible escape from Purgatory, though Castiel is nowhere to be found. However, Dean isn’t alone. He’s returned with a mysterious comrade-in-arms whose reason for escape is perhaps more than Dean bargained for. Meanwhile, Sam finds himself reconciling the life he discovered while Dean was gone with Dean’s sudden reappearance. As the boys struggle with their unexpected reunion, they make a shocking discovery that could lead them on a deeply personal mission to settle old scores. If only they could agree – is this a 'family business' or isn’t it?.
From Warner Bros. Television in association with Wonderland Sound and Vision, with executive producers McG (Charlie’s Angels, The O.C.), Robert Singer (Midnight Caller), Jeremy Carver (Being Human), Phil Sgriccia and Adam Glass."For the complete description, visit The CW.
Other source: KSiteTV