FRom the "servive news" forum area :
No release notes for this hotfix, this is to address the server stability issue, but we are also correcting a problem with the Epic Altar stripping effects off of certain chain items unintentionally. As a result, some Epic Altar recipes now use Siberys Dragonshards rather than Epic Tokens to avoid recipe overlap (which was causing the problem).
Answering the question "which recipes ?"
The Epic Cleansing ritual's. Performing the Cleansing Ritual at the Altar of Epic Rituals now requires 50 Siberys Dragonshard Fragments instead of 3 Epic Dungeon Tokens.