GW2 Game Director Mike Z,

"Living World of Guild Wars 2 is a great way for us to accomplish all of that. It’s the best way to provide our player community with regular content updates—great features, new horizons to explore, and an engaging story that brings our world and characters to life—without charging a subscription fee. We'll reorganize ourselves into four fully staffed content teams with additional teams dedicated to supporting the core game like Skills and Balance, Rewards, WvW, and sPvP.
Content teams will have more flexibility to decide what makes sense for a given release—for example, we could focus on expanding the boundaries and content of an existing map if that would provide a better experience than creating a new one. Ultimately, this will mean a relatively steady release of new content that will allow us to continue telling the story of Tyria in exciting new ways. After SAB, the Current Activities Team has a release that will build toward the Season 4 finale. More info is coming soon.
We’re currently adding more polish to the final encounter in the next raid, which continues the story of Qadim and will get its own release after Episode 6. We’re utilizing one of the new team’s efforts to build some additional small-scale open world content so all of our players will have something to celebrate with the release of the raid."
Build templates is in the works, legendary sigils and runes, increase cooking and jeweling to 500, and festivals for sPvP & WvW.
More Information: https://www.guildwars2.com/en/news/whats-next-for-guild-wars-2/