Naughty Dog, which has released a series of The Last of Us and Uncharted: Drake's Fortune, seems to have a few more "cool" projects that the studio will announce later. Back in 2020, it was reported that the company was hiring developers of some single-user project.
No details are available at the moment, but that doesn't stop fans from speculating about a possible project. In replies to Druckmann's tweet, Naughty Dog Co-President, some of the users immediately suggested The Last of Us 3, Uncharted 5, or the restart of The Jak and Daxter Collection.
Rumors about the latter circulated several years ago but did not receive any confirmation.
Some answers mention Factions 2 as a multiplayer for The Last of Us: Part 2, which has previously been confirmed in development.