As part of Sony's collaboration with Pottermore and the Pottermore Shop (the exclusive home of the HarryPottereBooks), Sony will offer a voucher to redeem against the first eBook in the HarryPotter series, HarryPotter and the Sorcerer's Stone, for free.
Pottermore, a unique website which builds an exciting and immersive online experience around the HarryPotter books and is the exclusive retailer of the HarryPotter digital eBooks, is partnered by Sony.