Released on November 22 2016. It affects the following platforms: PC, Mac.
Hotfix 11/22/16 – Aetheric Cipher Drop Rate (PC/Mac Only)Edit
We just completed a hotfix on the PC/Mac megaservers that will increase the chance for Aetheric Cipher to drop throughout the world. There is no patch to download, and you don't need to relog for this change to take effect.