Announced changes1
Professions and balance
There will be new unlockable skills and traits.
Precursors, and legendaries
New legendary weapons.
New types of legendary equipment (possibly a trinket2).
New precursor acquisition methods.
sPvP
New map types.
It will be possible to gain legendary weapon skins in sPvP.
Additional rewards and growth will be added to the major competitive sPvP tournaments.
[edit] Collaborative Development Initiative
Primary article: Collaborative Development Initiative
These changes are part of recent or current CDIs. They do not include specific details nor release dates.
World versus World:
Improving the commander functionality: Being discussed, but not being worked on yet 34
Structured PvP:
Objectives other than conquest 56.
[edit] Mentioned
These changes have been mentioned by ArenaNet, but lack specific details and/or a release date.
General content:
New weapon types and expansion of current weapon types to more professions.2
Character progression, new professions and races. 5
New regions and dragons.7
Activities: includes bar brawl, polymock and a shooting range.8
Foes: More variations to creatures. 9
Housing: Guild halls and player housing are not currently being worked on. 1011
Structured PvP:
New maps.12
World versus World:
Matchup information made available ahead of time is looked into, but complicated.4
Edge of the Mists map.4
Dueling: The ability to duel other players in world.13
Those are on the wiki specifically because people have pulled them from dev interviews or comments.
So whilst they are not always 100% correct because development is not set in stone – as of the time they were put on the wiki they were correct. A dev response to this is unlikely.
The dueling shouldn’t be there since it’s been confirmed that it isn’t being actively worked on. The page is for upcoming features/content, rather than possible things that might come years and years down the track. But oh well.