Well-known Destiny leaker AnonTheNine revealed on Reddit that development on Destiny 3 is starting up right now and it will be more "hardcore" than Destiny 2, with a bigger focus on RPG elements.
The Destiny subreddit began theorizing that Bungie should have a "solid base version" of Destiny 3 up and running by now, but AnonTheNine countered by saying "development is starting right now," and that art director Chris Barrett will be taking over as director from Luke Smith, but Smith will still have a "big role."
The leaks culminated with a post from AnonTheNine titled "Can't wait" featuring a picture of the Jupiter moon Europa where Destiny 3 will supposedly take place. It's a location long teased by Bungie but never actualized in the game series itself.
AnonTheNine has been responding on Reddit with a lot of supposed Destiny 3 details including how Guardians will be able to use Darkness powers (currently they have Light powers) and that there will be open world segments with PvPvE combat. The latter will resemble some kind of "fight for territory, where PvP its there for a reason and not for griefing the heck out of people."
Other details from AnonTheNine are about how Destiny 3 will be more "hardcore" than Destiny 2 and that Bungie is "going balls out with the rpg stuff," compared to the "vanilla" Destiny 2. "Just know that D3 will be even more 'hardcore-y' than Forsaken. And finally they're going to push the rpg side of the game."
AnonTheNine is not a verified source of information but has previously leaked correctly new locations and subclasses coming to Destiny 2 Forsaken, and revealed the Thunderlord exotic machine gun that was recently datamined in Destiny 2.
Destiny recently released its big Forsaken update which serves as the basis for Year 2. While Forsaken killed off Cayde-6, it also itnroduced new quality of life updates and a new raid set in the Dreaming City.
For more on Destiny 2's current trajectory check out our Destiny 2 Forsaken guide as well as our own suggestions of how Destiny can win back a playerbase that fell off after the game's well publicized problems.