PvP will see the addition of a new Warzone as well as an overall ranking system for avid PvP players to track personal progress. UI customization is also coming, starting with a fully resizable and reconfigurable layout. And the Legacy system is being rolled out in full, complete with the promise of new races being available as Legacy rewards for the factions. So if you're a Star Wars: The Old Republic fan and have been feeling a bit down with recent news, this might help perk you back up.
[Update: A reader named Jon has tipped us off to an article on Gamesradar in which BioWare's Daniel Erickson confirms that the character in today's video is "definitely a Miraluka Sith," which suggests that the Miraluka may be ported cross-faction as part of the Legacy system rewards.]