The following information (posted on Amazon.com) about the "junior novelization" of the upcoming The Sorcerer's Apprentice links the film closely to the Arthurian tradition:
In modern day Manhattan, one young man's life is about to take a surprising turn. When Dave Stutler wanders into a strange shop downtown, he can never imagine the consequences. It turns out that Dave is no ordinary boy--he is a Merlinian. As a descendent of the most famous sorcerer in history, Dave has untapped powers. The problem is, certain people don't want him to ever use them. Led by Horvath, a Morganian (descendents of the evil sorcereress Morgana), this group will stop at nothing to destroy Dave and unleash darkness upon the world. Dave will have to rely on the help of his mentor, Baltazhar Blake, to find his inner strength and help save the world.