Personally I haven't heard ANYTHING about Europa, but I have heard Saturn mentioned by a Bungie employee in an interview video or Vidoc. Don't ask me which one, but if I happen across it again, I will link it. Edit: Not the video I viewed previously, but seemingly confimation nonetheless: IGN article writes the following. "Bungie art director Christopher Barrett dubbed Destiny a “mythic science fiction” universe and shared a number of locales we can look forward to visiting: the Cosmodome Breach, the ruins on the edge of the European Dead Zone, the swamps of Old Chicago (likely a nod to Bungie’s original home city), derelict fleets floating in the rings of Saturn, the earth Moon’s Hellmouth, the uncharted depths of Reef, giant obsidian pyramid ships, mile-long tomb ships, and much more." Link: http://www.ign.com/articles/2013/02/17/bungies-destiny-a-land-of-hope-and-dreams?page=2