(RNN) - HBO is using social media to whip Game of Thrones fans into a lather for the next season of its smash hit.
The network released the first trailer Sunday, before the debut of its ballyhooed new series True Detective, starring Woody Harrelson and Matthew McConaughey.
Season 4 will kick off on April 6 for the violent, sexy medieval fantasy based on the Song of Fire and Ice novels by George R.R. Martin.
Martin himself wrote the teleplay for the second episode of the new season, according to Rolling Stone.
A series of Vines earlier this month teased the trailer, giving six second glimpses of action in the season to come.
The new trailer opens with the despicable king Joffrey proclaiming "I won the war," and a healthy Jaime Lannister reminding him that "the war's not won."
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