Tonight, a small update came out that added a new look to the Anti-Mage song. The style adds new lines and animations, and also changes the gender of the character and the icon on the minimap. You can get it by reaching level 305 of the compendium.
From the announcement:
“The time has come to see how the new heritage is rising. Anti-Mage accepted Wei as followers, taught her the forgotten wisdom of his people, and now sends the girl to the last test. Wei must leave the temple to cast off the horrors of the past and find out if she is truly ready to face the world of magic and place the ubiquitous sorcerers on their vile knees. "