In addition to a new thirteen-boss dungeon called the City of Brass, the devs are also cranking out overland raid bosses, removing the game's corpse recovery mechanics, and easing the leveling experience. There's also a blurb about increased drop rates and a "golden path" via the game's riftways that will guide players to the ideal adventuring areas for their level.
There's no date on all the goodies as of yet, but the post says that SOE is "getting close" to migrating the patch to Vanguard's test server. Head to the official forums to see for yourself.
