D&D is reviving Planescape with a three-volume boxed set, coming in 2023

polygon.com:

Dungeons & Dragons used a Tuesday press conference to tease a packed release schedule, which includes the return of the Planescape campaign setting in fall 2023. The beloved setting, first published in 1994, will be getting the same treatment Wizards of the Coast provided with Spelljammer: Adventures in Space: a three-book slipcase including a setting guide, bestiary, and adventure campaign.

The setting of the classic PC game Planescape: Torment, Planescape digs into D&D’s deep cosmology by allowing players to hop between different planes. These include other traditional D&D settings on the Material Planes, the Inner Planes, which represent elemental forces, and the Outer Planes ruled by gods, angels and demons.

The city of Sigil serves as a hub for interplanar travel and is itself a rich setting with complex factions and a mysterious ruler known as the Lady of Pain. Players are encouraged to join one of the 15 factions which are united by a philosophy on the meaning of life. For instance, the Society of Sensation believes that enlightenment is achieved through experiences. Members use magic to store their memories so that others can experience them. The Harmonium police Sigil because they believe that they should rule all of reality to provide peace and stability.

While the fiendish tieflings, celestial-touched aasimar, and elementally aspected genasi have become staples in D&D, they were first introduced in Planescape as “planetouched” people. Planescape’s return was teased in a July Unearthed Arcana release that introduced glitchlings, a new player option similar to rogue modrons. In Planescape, modrons are constructs that enforce the rules of law and order from the Clockwork Nirvana of Mechanus. Glitchlings might