New maps for WvW
Devons already announced they are approaching the final stages of changing the current maps, and they are possibly already working or new maps entirely are in the planning stages Though it will most likely be months before we see any signs of the last on, The first part should be coming fairly soon imo.
Isle Of Janthir
No new content IMO until they put the resources into fixing basic UI group functions in WvW. As well has revamping the Commander & Squad system into something flexible that can be used for all players and guilds to coordinate. Public, Private or guild only options as well as enhanced tools to coordinate squads are sorely needed before new “fluff” content.