The Big Bang Theory universe is expanding thanks to a spin-off from the show’s original author.

The news was revealed on Wednesday (April 12) during Warner Bros Discovery’s press day, where the company also announced the new platform Max, a rebranded combination of HBO Max and Discovery+.

Executive producer Chuck Lorre, who co-created the original The Big Bang Theory series with Bill Prady, will develop new shows for Max.

At this point, the plot details are currently being kept secret.

Run for 12 seasons from 2007 to 2019, The Big Bang Theory stars Johnny Galecki and Jim Parsons as two friends who are physicists, with Kaley Cuoco playing their neighbor Penny.

The spin-off series will mark Lorre’s second collaboration with Max and WBTV under a master agreement.

Currently, he is producing with actor Nick Bakay (Sabrina the teen witch) in the new Max Original comedy series How to become a bookiecomedian Sebastian Maniscalco (Irish).

The untitled spinoff will become the second derivative of the original 12-season sitcom.

Current CBS The Big Bang Theory prequel series Young Sheldon — which revolves around the nine-year-old version of Jim Parson’s character Sheldon Cooper, played by Iain Armitage — is in its sixth season.

Elsewhere on Warner Bros Discovery’s press day, the company confirmed that it is moving ahead with the “decade-long” Harry Potter TV series. JK Rowling will serve as the show’s executive producer to “make sure it stays true to her original material”.

Meanwhile, Collin Farrell waddled into a Batman spin-off titled Penguins. An early trailer for the show was played at the press event.

The trailer shows Farrell waddling up the stairs, saying things like: “I’ll cut you like a damn fish.”

His character is seen toasting Sofia Falcone (Cristin Milioti), daughter of John Turturro’s Carmine Falcone. Penguins is slated for release in 2024.