The fourth and final installment in Christopher Paolini’s bestselling fantasy series for children INHERITANCE releases today. Random House Children’s has announced a first printing of 2.5 million copies, a number you don’t hear very often any more for printed books. When BRISINGR was published in September 2008, the publisher reported opening day sales of 550,000 copies in the US, and 45,000 copies in the UK. Over the weekend, Waterstone’s told the Independent that the book recorded “the biggest pre-order of a children’s title since JK Rowling’s final Harry Potter book,” with “tens of thousands of copies” sold in advance.