The BBC-owned streaming service has unveiled an expanded offer with exclusives and new linear channels after customer feedback.
Lang surprised staff during an "all hands" meeting in September 2024 by revealing she would be stepping down from her role.
The app will be integrated into the Foxtel platform in August.
BritBox now promising to be the home of great British dramas. Coming soon: The Jetty.
Plus: Matt Chandler, Hearts & Science's new leadership team, and Kerel Cooper.
BritBox has also acquired four new shows from BBC Studios as BBC First exits Foxtel and Binge.
Rebecca Glashow says commercial opportunities being scrutinised for BBC News app and BBC.com.
The Gentleman, Boy Swallows Universe, High Country and 15 other great drama hits so far in 2024
BritBox remains one of two Mediaweek Top 10 streaming services not yet on Hubbl
'I could watch Eve Best and Suranne Jones snap at each other forever' in BritBox's Maryland
Plus other summer highlights on Britbox, Stan and Prime Video
Take charge of your entertainment budget. What other platforms made the Mediaweek Top 5 streamers?
• BritBox has over 2.6 million subscribers around the world
• "We are optimistic about the future, despite the ongoing pandemic risk"