Last week, Fox brought a whopping 13 shows to San Diego Comic-Con, one of which was the network's longest-running show, The Simpsons. It is going into its 28th season this fall. Several of the show's producers and voice cast members greeted fans in San Diego to discuss this upcoming season, but they also addressed the possibility of a sequel to 2007's The Simpsons Movie. As it turns out, according to showrunner Al Jean, a movie still very well may happen.

Fox released a highlights video on YouTube just a few days after the panel, which features a fan asking whether or not another Simpsons Movie will happen. Way back in 2009, series creator Matt Groening didn't sound too optimistic about the possibility of The Simpsons Movie 2, bemoaning the fact that it took four years to make, instead of the two years they were planning. When asked about a new movie at this year's SDCC panel, Al Jean revealed it's something they do still discuss, and that there's only one reason it will happen.

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"We talk about it, but if we do it we only want to do it if it's going to be really good. We would never do it just to cash in, so if it comes out, it's because we believe in it."

Al Jean was joined by series creator Matt Groening executive producer Matt Selman, supervising director Mike B. Anderson, Oscar nominated director of The Simpsons Movie, David Silverman and voice of Bart Simpson, Nancy Cartwright at the panel. While we'll have to wait and see what happens with this potential Simpsons Movie sequel, the show's 28th season debuts Sunday, September 25 on Fox. Last season brought unique milestones like Smithers coming out as gay, and the show airing a special live episode through motion capture, while this season will bring fans the 600th episode.

The Simpsons Movie fared quite well at the box office when it debuted in July 2007, earning $183.1 million domestically and just over $527 million worldwide, from a $75 million production budget. The movie also introduced the beloved Spider-Pig, who actually returned in the actual series in a Season 27 episode. Take a look at the video from from last weekend's Comic-Con panel, with The Simpsons Movie talk starting at the 0:36 mark.