Everyone’s favorite bespectacled boy wizard is celebrating a notable anniversary. “ Harry Potter and the Sorcerer’s Stone” (or, “Philosopher’s Stone,” if you’re British) turns 25 next year. To honor the milestone, Warner Bros. is deploying a year-long celebration across all divisions of the media company. Though some details remain under the cloak of invisibility, fans can expect a global theatrical re-release of the original film, special edition products and retail promotions. A newly