The CW has released an official description of
8.15 – "Man’s Best Friend with Benefits".

DEAN REALLY DOESN’T LIKE WITCHES
Written by: Brad Buckner & Eugenie Ross-Leming,
Directed by: John Showalter.
Airs: Wednesday, February 20th, 2013.

The CW has released 9 episode stills of
8.14 - "Trial and Error".
Kevin deciphers the tablet and figures out how to close the gates of Hell.
Written by: Andrew Dabb,
Directed by: Kevin Parks.
Airs: Wednesday February 13th, 2013 at 9/8c.

The CW has released 10 episode stills of
8.13 - "Everybody Hates Hitler".
Sam and Dean investigate the death of Rabbi Bass, who spontaneously combusted.
Written by: Ben Edlund,
Directed by: Phil Sgriccia.
Airs: Wednesday February 6th, 2013 at 9/8c.

The CW released a few clips of the episode
8.12 - "As Time Goes By".
Henry Winchester, the boys' paternal grandfather, time travels to the present in a search for his son, John.

Airs: Wednesday, January 30th, 2013 at 9/8c

The CW has released an official description of the episode, 8.14 – "Trial and Error".

KEVIN DECIPHERS THE DEMON TABLET
Written by: Andrew Dabb,
Directed by: Kevin Parks.
Airs: Wednesday, February 13th, 2013.

The CW has released 6 episode stills of
8.12 - "As Time Goes By".
Sam and Dean are stunned when a man appears in their hotel room who claims to be Henry Winchester.
Written by: Adam Glass,
Directed by: Serge Ladouceur.
Airs: Wednesday January 30th, 2013 at 9/8c.