ArenaNet has updated the Guild Wars 2 blog with a new post by Jonathan Sharp that lays out the reasons and details behind upcoming changes to both skills and traits. According to the post, the changes are necessary to give each class has build diversity.
First off, we’ve got a ton of trait changes coming up. Many traits that were less than desirable have been brought up in effectiveness, while others have been shuffled around and merged together to make room for new traits to be introduced. In doing this, we’ve created several new grandmaster traits for quite a few trait lines. For example: elementalists have a new grandmaster Air trait that allows them to recharge their air attunement, necromancers now have access to the burning condition, and warriors will have an option to remove conditions when using burst abilities.
With these changes in mind, we are going to be making a few builds a little harder to achieve due to their extreme effectiveness. Some traits will go up in tier while increasing in potency to promote build variation.
Read more on the Guild Wars 2 site.