After laboring for a decade to adapt J.K. Rowling’s tales of the wizarding world to the big screen, those associated with Harry Potter are gearing up for the Nov. 19 opening of the seventh film in the series.

Warner Bros. is using the trailers to kick off “The Year of Harry Potter,” which will culminate in the release next summer of the second part of Deathly Hallows. The Wizarding World of Harry Potter theme park opened June 18 in Orlando.

The new movie focuses heavily on Harry’s tangles with the evil Lord Voldemort. “Harry and Voldemort go wand to wand in the courtyard,” says longtime producer David Heyman.

In one scene, Voldemort grabs Harry’s face and malevolently hisses “Why do you live?” And brave Harry responds, “Because I have something to live for.”

These last two films will be the first to be shown in IMAX 3-D.

“The technology has developed and offers great possibilities,” Heyman says. “We won’t be going for that ‘wow, things always jumping out at you’ effect. I think the best 3-D doesn’t have to be aggressive. We’ll be pushing back from the screen. We’re going for an organic, truthful 3-D.”

But what about 3-D fatigue among audiences? “Those people who aren’t keen to embrace the 3-D of it all will have plenty of opportunities to watch it in 2-D,” he says. Technical advances have leaped forward over the course of the series. “A lot of the stuff we do in this film, we couldn’t have done on the first film,” says Heyman. “The quality of the visual effects is so much better. (House elves) Kreacher and Dobby will be so much better realized than in the previous films since we have new technology to better capture their faces.

“What I love about these films is the blend of old and new technology.”