The River of Shadows. It's due out on the 19th of April, though you can order it now, and it will automatically be delivered to your Kindle on the release day.
Here's the blurb:
In the gripping sequel to Robert V. S. Redick’s acclaimed epic fantasy novels The Red Wolf Conspiracy and The Ruling Sea, the crew of the vast, ancient ship Chathrand have reached the shores of the legendary southern empire of Bali Adro. Many have died in the crossing, and the alliance of rebels, led by the tarboy Pazel Pathkendle and the warrior Thasha Isiq, has faced death, betrayal, and darkest magic. But nothing has prepared them for the radically altered face of humanity in the South.
They have little time to recover from the shock, however. For with landfall, the battle between the rebels and centuries-old sorcerer Arunis enters its final phase. At stake is control of the Nilstone, a cursed relic that promises unlimited power to whoever unlocks the secrets of its use—but death to those who fail. And no one is closer to mastering the Stone than Arunis.
Desperate to stop him, Pazel and Thasha must join forces with their enemies, including the depraved Captain Rose and the imperial assassin Sandor Ott. But when a suspicious young crewmember turns his attentions to Thasha, it is the young lovers themselves who are divided—most conveniently for Arunis. As the mage’s triumph draws near, the allies face a terrible choice: to break their oaths and run for safety, or to hunt the world’s most dangerous sorcerer through the strange and deadly dream kingdom known as the River of Shadows, and to face him a last time among the traps and horrors of his lair.
Brimming with high adventure, dark enchantment, and unforgettable characters, The River of Shadows deftly secures Redick’s place in the ranks of epic fantasy’s most original and enthralling storytellers.
$9.99 for the Kindle: The River of Shadows