Updates to the PvE side begin with the Tower of Babel, a 40-level tower with progressively more difficult guardians (and better rewards!) on each level. The Tower of Babel can be attempted once per day, but fight carefully, because a defeat will expel you from the tower empty handed. The tower isn't the only new challenge facing players, though. Three times a day 20 minions will appear on your world map, each defending a powerful boss monster in an instanced challenge.
PvP has gotten a nice facelift as well, with the addition of new Arena rules, new military ranks, and a very generous list of new military equipment. The full list, as well as all the new additions that came with the BABEL expansion, can be seen on the official site.
