NEW YORK- That was fast.

Sarah Palin, the former Alaska governor and vice presidential candidate, has finished her memoir just four months after the book deal was announced, and the release date has been moved up from the spring to Nov. 17, her publisher said.

"Governor Palin has been unbelievably conscientious and hands-on at every stage, investing herself deeply and passionately in this project," said Jonathan Burnham, publisher of Harper. "It's her words, her life, and it's all there in full and fascinating detail."

Palin's book, her first, will be 400 pages, said Burnham, who called the fall "the best possible time for a major book of this kind."

The book now has a title, one fitting for a public figure known for the unexpected -- "Going Rogue: An American Life."

Harper, an imprint of HarperCollins, has commissioned a huge first printing of 1.5 million copies. Sen. Ted Kennedy's "True Compass," published by Twelve soon after his Aug. 25 death, also had a 1.5 million first printing.

As with the Kennedy book, the digital edition of Palin's memoir will not be released at the same time as the hardcover. "Going Rogue" will not be available as an e-book until Dec. 26 because "we want to maximize hardcover sales over the holidays," Harper spokeswoman Tina Andreadis said Monday.

Publishers have been concerned that e-books, rapidly becoming more popular, might take away sales from hardcover editions, which are more expensive.

Palin, who abruptly resigned as Alaska governor over the summer with more than a year left in her first term, has been an object of fascination since Sen. John McCain, the Republican presidential candidate in 2008, chose her as his running mate, making an instant celebrity out of a once-obscure public official.

Although Democrat Barack Obama easily won the election and Palin was criticized even by some Republicans for being inexperienced, she remains a favorite among conservatives and is a rumored contender for 2012. Interest in her is so high that a fan recently paid $63,500 to have dinner with her, part of an Internet auction for a charity that aids wounded veterans.

Palin, 45, spent weeks in San Diego shortly after leaving office and worked on the manuscript with collaborator Lynn Vincent, a person close to her said. She was joined in San Diego by her family and her top aide, Meghan Stapleton, then spent several weeks in New York working around the clock with editors at Harper, said the person, who wasn't authorized to comment and asked not to be identified.