Look i get where you are coming from but i don't want to wait another year where they make a tiny improvements to the client and no new stuff
We want to address the really noticeable issues with the new client before releasing new content. New content releases reinvigorate interest in the game and we want to make sure that the major frustrating aspects are addressed so players will continue playing.
The specific causes are being tracked down right now, but due to how deep in the code they reside we need to fix them and then fully test them to make sure no new issues are introduced as a result of the fixes. For this reason we can not give an exact date as to when they will be patched into the game.