Diablo 3 has been updated to version 1.39 patch 2.7.1 today by Activision Blizzard. You can find out the complete patch notes from here.
The new update has added plenty of fixes while starting season 4 for Diablo 3 on PC and consoles. You can find out the details on what has been fixed or added in the new update from the patch notes below as shared by Activision Blizzard.