Star Wars: The Old Republic, you'll be happy to know that the newest tier is being added in update 1.4. You may be slightly less happy to know that the new operation, Terror From Beyond, is not meant to be a cakewalk by any stretch of the imagination. A new developer diary explains the lore behind the operation and some of the threats that players will be facing on the swamp planet of Asation.
Colonized and largely abandoned by the Gree, Asation is a swamp planet that houses a massive hyperspace gate. The Dread Masters, a group of Sith not known for sunny dispositions, have opened the gate and started filling the planet with all manner of horrible creatures. The operation promises to offer new encounters and mechanics beyond what's been seen in previous raids, something for dedicated endgame players to look forward to in the next major content update.