Originally Posted by Blizzard

Hotfix List
Below you will find a list of hotfixes recently applied or coming soon that address various bugs or mechanic tweaks.

These hotfixes should not require you to download a new patch. Some of the hotfixes below will go live the moment they are implemented while others may require restarting the game to go into effect. Please keep in mind that some issues cannot be addressed without a client-side patch. Also note that changes to certain abilities will not be reflected in its tooltip until a patch is issued.

Last updated January 16, 2015. Hotfixes are denoted by the date they were applied to live servers.
Previous Hotfixes: [2.1.0] [2.1.1]

[UPCOMING HOTFIXES]
Rifts:

    Dramatically increasing the damage of the Conduit Pylon in both Nephalem and Greater Rifts
    These changes should result in Conduit feeling more in line with strong pylons like Power and Channeling without trivializing Rift Guardians

[LIVE HOTFIXES]
Achievements:

    Resolving an issue where players who have killed all the bosses except Lord of Bells prior to Patch 2.1.2 are unable to gain the achievement "You're not the Boss of Me" (1/16)