The latest season of the mega-successful HBO series, "Game of Thrones," recently ended its fifth season with shocks, surprises and outrageous deaths. Notably, this season was based on the fourth and fifth book in George R.R. Martin's chart-busting series "A Song of Ice and Fire." But now that it has finally caught up with its source material, what will the show be using for its sixth season?

Martin is dropping everything from a writing gig for the series to guestings and conferences just to focus on the most talked-about sixth volume titled "Winds of Winter." However, the author is still unable to pinpoint a specific release date for the much-awaited follow-up, which has fans clamoring for what the future holds for the people of Westeros.

According to Bustle, despite the absence of a new source material, David Benioff and D.B. Weiss know just where to extract arcs and stories for "Game of Thrones" season 6. The site says that the pair have been saving specific subplots from the previous books.

For starters, HBO's casting call hinted on the show dealing with cherry-picked arcs from "A Feast for Crows," the fourth book in the series.

It is possible that the Greyjoys' attempt to take the reins on the Iron Islands following the death of King Balon, which is yet to be depicted in "Game of Thrones," as well as his children Asha (Yara in the show), Euron and Victorian's battle for the Kingsmoot crown will be told in the new season. As noted by Latinos Post, Theon's uncle, Euron and Sam's father, Randyll may finally appear in the show if the casting call is any indication.

"A Dance With Dragons," which Bustle notes was adapted more than its predecessor, still has arcs that remain untouched by the showrunners. This means that Bran might return in "Game of Thrones" season 6, and his comeback will most likely chronicle his training in Three-Eyed Raven, which is the only chapter left out of the tree point-of-view chapters to be adapted.

Bustle also mentions that the story of Aegon Targaryen will likely be told in the next season. What was noticeably missing was the Young Griff's tale as he follows Dany to Meereen to marry her, only to learn that she has already married Hizdahr Zo Loraq, which, in turn, leads him to conquer Westeros instead. Also, the epilogue for the fifth book, which saw Varys kill Kevan Lannister for being an admirable leader, still hasn't gotten its small screen treatment.

Lastly, it is still hoped that the unforgettable epilogue for "A Storm of Swords," where the Red Priest Thoros of Myr resurrects Catelyn Stark into the vendetta-bent Lady Stoneheart, will be rendered in "Game of Thrones" season 6.