It's not really any big surprise that there will be DLC or that they will offer a season pass, but it's still neat to know.
We've always done a lot of DLC for our games. We love making them and you always ask us for more. To reward our most loyal fans, this time we'll be offering a Season Pass that will get you all of the Fallout 4 DLC we ever do for just $30. Since we're still hard at work on the game, we don't know what the actual DLC will be yet, but it will start coming early next year. Based on what we did for Oblivion, Fallout 3, and Skyrim, we know that it will be worth at least $40, and if we do more, you'll get it all with the Season Pass.
They also discussed how the original game would continue to evolve.
We'll be doing regular free updates to the game, and like Skyrim, these will come with not just fixes, but new features. For Skyrim we added things like mounted combat, legendary mode, kill cams, visual enhancements and more. We'll work with all of you to figure out what new things you'd love to see added to Fallout 4, whether they are small tweaks or new features.