And ArenaNet posted a new post on their blog about some of the changes they've made lately. It's quite nice!
Downed and defeated mechanisms have been redone, such that you can revive yourself if no monsters or allies are around and your armor will break if you die enough times.
The minimap/compass has been beefed up.
Meta-events are introduced, they're massive dynamic events basically!
Hidden treasures have been added that give gameplay some additional twists for the most adventurous of us all.
Boons and conditions have been revamped to be more interesting and less "math"-like, and the team is working on making them more visible to the player.