The cast of "Family Guy" spent this week being cheerfully unhelpful about the show's first spin-off. "I know everything, and I can't tell you anything!" Alex Borstein, who voices Lois Griffin, told ABC7, adding only that the new series "will be very different." Seth Green, the voice of Chris, offered that "It looks really funny, I love Stewie." Kenan Thompson, joining the new show, said he had convinced Stewie to let him into his friend circle.

Behind the teasing there is a firm order. Here is what has been announced.

What is confirmed

Fox has ordered two seasons of "Stewie," TheWrap reported. It is scheduled to premiere on Fox in the 2027-28 television season, with episodes going to Hulu the day after they air and to Disney+ internationally.

The premise: Stewie is thrown out of his preschool and lands at a distinctly worse one, complete with a 75-year-old class turtle and teachers with questionable ideas, and uses his inventions to turn ordinary school days into trips through space and time.

Seth MacFarlane returns as the voice of Stewie and is co-creator and executive producer through his Fuzzy Door Productions. Kirker Butler, a longtime "Family Guy" writer, is co-creator, executive producer and showrunner. Kara Vallow also executive produces. MacFarlane's announcement statement was characteristically dry: "I'd like to thank Fox for this incredible opportunity, and I'm excited to start pretending I'm collaborating closely with them on the show."

A disclosure worth making: ABC7, where the cast interviews ran, is owned by The Walt Disney Company, which also owns Hulu and Disney+, two of the three platforms carrying the series.

What is not confirmed

The episode count per season has not been announced. Neither has the full voice cast beyond MacFarlane and Thompson, nor whether the rest of the Griffins will cross over. Borstein said Stewie is not leaving "Family Guy," which continues in parallel, but the mechanics of how a character carries two shows at once have not been described.

Where this sits in a very long run

"Family Guy" is in its 24th season and recently passed its 450th episode. That number would have looked absurd early on. Fox premiered the show in 1999, cancelled it after the second season, aired a short third, and dropped it. Reruns on Adult Swim beginning in 2003, along with strong DVD sales, rebuilt an audience large enough that Fox ordered more, and the series returned in 2005 and has run since.

A spin-off at this stage is less a creative gamble than an asset decision: Fox is extending the most durable property in its animation block, a Los Angeles-made show that outlived its own cancellation and has now been on the air longer than most of its audience has been alive.