Another new addition will be an item called a Challenge Card. Using a Challenge Card will give the player a quest that allows for yet another new encounters to be unlocked. In addition, once you've defeated a boss, you can speak to the Challenge Card NPC for the opportunity to revisit the fight if you so desire. So for those of you who have been wanting the ability to face down a boss more than once, your wishes shall soon come true. Also available will be player VIP lounges - for those of you with a high enough ranking, of course! There will be unique Alliance and Horde areas, but if you play Alliance and have completed the 5.1 quest lines, you may already have a passing familiarity with your spot.
Happy brawling in 5.3, and a good shiner to you!