Updates are an important part of your product's life cycle and a critical form of communication with customers.
You'll need to make updates to fix bugs and address issues, but major updates are also a huge opportunity to add new content, new modes of play, or new features to help keep customers engaged and attract new audiences.
You can sell it as Downloadable content (DLC) or as in-game purchases.
Or you can simply include it in the base game as a free content update.
Whether your product is a free to play service or a single player narrative, updates can grow your user base and deepen engagement.