Brandon Sanderson has posted on his blog that he has delivered the final draft and revisions of A Memory of Light, the final volume in The Wheel of Time, to Tor Books. A few minor editing tweaks aside, the book - and the entire Wheel of Time series - is completed and done.
Robert Jordan started writing The Wheel of Time in 1984, publishing the first novel in 1990. Sanderson took over the writing of the series in late 2007, two months after Jordan's untimely death from a rare blood disorder. Working from vast amounts of notes and outlines prepared by Jordan in his final months, Sanderson published the twelfth and thirteenth novels in the series - The Gathering Storm and Towers of Midnight - to mostly positive reviews. Sanderson notes in his entry that he has been working on The Wheel of Time continuously for five years and, despite the rewarding nature of the work, he is now keen to return to his own worlds and stories. He has confirmed that the second novel in The Stormlight Archive series (originally entitled Highprince of War, but likely now to have a new title) will be his first priority.
A Memory of Light is currently scheduled for publication in January 2013.