John Williams involved in Half-Blood Prince soundtrack?

A new article released by The Boston Globe today talks about composer extraordinaire John Williams. Potter fans know him well for having composed the scores of Sorcerer's Stone, Chamber of Secrets, and Prisoner of Azkaban. Besides interesting information about Williams performing some of his Potter scores in Boston later this week, the article notes that he is hard at work on several soundtracks including Half-Blood Prince. But as was revealed back in November, Nicholas Hooper is set to score the sixth film. So what's the deal? The article cites "industry reports," and a quick check on IMDB reveals that Williams is credited for the Harry Potter theme in Half-Blood Prince. The theme was originally composed for Sorcerer's Stone and has been used for every film since. The newspaper could have mistakenly assumed this meant he was actually involved. We'll let you know what Warner Brothers has to say!