I'm not sure they will drop us to 20 (it would make sense logically since it's the current XP cap), but I hope that we aren't 34 when it starts. If we are, no way is the content in TTK going to be anywhere near enough to carry this game another year of grinding and I cannot fathom running the vanilla content for another full year. TTK will likely be Sept filler until the big, full title AAA games start dropping.