In addition to the long-gestating live-action film, Hasbro have announced they are developing a Dungeons & Dragons TV series.
Dungeons & Dragons is the longest-running and most popular roleplaying game in history, having sold more than 20 million rulebooks and well over 100 million novels and 10 million video games since 1974. It is estimated that more than 50 million people have played the game. The current fifth edition of the game, released by Hasbro subsidiary Wizards of the Coast in 2014, is the most popular in the game's history. Hasbro has confirmed that 2019 was the biggest-selling year in the franchise's history (including its early days) and for 2020 the game is currently on track to break that record by over 20%. Hasbro attribute this to the popularity of the game in lockdown and that families are now playing the game together, as well as the more traditional friend groups. Online campaigns over Zoom, Facebook Video Messenger, Skype, Roll20 and other services have also grown significantly this year.
Hasbro are developing the film project with Paramount, with Jonathan Goldstein and John Daley (Game Night, Horrible Bosses, Spider-Man: Homecoming) set to write and direct and Jeremy Latcham (the Marvel Cinematic Universe) set to produce. However, Hasbro have been keen to expand the franchise into a shared universe similar to the MCU. Whilst everyone and their aunt has been trying to do the same thing with other properties, Dungeons & Dragons is uniquely placed to be commercially exploited in such a fashion, as the tabletop game, video games and the novels already span a large number of worlds, storylines and distinct casts of characters, with some scope for crossover but mostly consisting of stand-alone narratives. For example, the well-known Dragonlance, Forgotten Realms, Dark Sun, Greyhawk and Ravenloft worlds are distinct, separate settings within the same universe (linked by the wider Spelljammer and Planescape settings, which depict space travel and interplanar travel respectively).
According to Hasbro, they have been in discussion with both streaming services and standard cable and TV networks over a D&D-branded TV series. It sounds like the project is in its earliest stages and will require a strong partner to commit before moving forwards. I can imagine Netflix, Amazon, HBO and maybe a few other companies being at least somewhat interested in the project, but we'll have to wait to see who bites.
Hasbro are having a tough time in other areas at the moment, facing a $10 million lawsuit from superstar authors Margaret Weis and Tracy Hickman for allegedly breaching a contract by refusing to publish a new Dragonlance novel trilogy for reportedly spurious reasons. The outcome of that suit remains to be seen.