RaiderZ: Broken Silence will bring in a new level cap, new areas, new bosses, and piles of shiny new gear and features. Among those features will be an improved party and matchmaking system and a "Wave System" that finds other folks hunting down large monster packs. Additionally, Broken Silence will bring in a new PvP arena. We don't have a date or other juicy details yet, but be sure we'll bring 'em to you as they come.
[Source: PWE press release]