In an interview with Famitsu, Eiji Aonuma, the producer of the game The Legend of Zelda: Tears of the Kingdom, confirmed that there will be no more content updates for the game. This is because they have already incorporated all ideas into the main game and have run out of ideas for additional DLCs.
In the case of the previous game, Breath of the Wild, the development team had ideas for additional content, but they decided to expand the scope and create a whole new game, Tears of the Kingdom, instead.
During the interview, Aonuma also discussed the game’s vision from the start of development. He mentioned that players will have a lot to do in the game, as there are many activities and quests available. The timeline of the game will continue from Breath of the Wild, but the connection to other games in the series is intentionally left ambiguous, allowing players to imagine their own connections.
TLDR: Eiji Aonuma, the producer of The Legend of Zelda: Tears of the Kingdom, confirmed in an interview that there will be no more content updates as all ideas have been incorporated into the main game. The game will offer players a vast and immersive experience with ample activities and quests. The connection to other games in the series is left open to interpretation.