Since the start of the Nexus War, Malygos has been diverting Azeroth's ley lines to the shrine, empowering his flight's dragons. His actions are of terrible consequence though as he is ripping the fabric of reality apart. A daily quest exists for The Wyrmrest Accord which asks players to disrupt the surge needles in the shrine.
This section concerns content related to Cataclysm.
The dragonshrine can be visited while in a possible timeline of End Time. The area is scattered with the remains of the Nexus War. The Echo of Jaina can be found here.