This patch will remove all acquisition methods for tomestones of esoterics, with all esoterics items becoming purchaseable through other means and the usual exchange options available. The patch will also remove tomestones of law altogether, meaning that if you’re still sitting on a pile of law tomestones that you’ve never exchanged, you’ll need to take care of that before the patch goes live or lose them forever. Poetics tomestones, meanwhile, remain more or less unchanged.
Source: Official Site