Guild Wars - Hard Mode @ Official Site

ArenaNet and NCSoft have announced a new gameplay type for Guild Wars: hard mode.

Hard mode is not for the faint of heart. We've made adjustments to provide you with heartier henchmen and followers (for example, lower level henchmen will become level 20 upon entering a Hard mode area), but the levels of all of your foes, as well as their AI, have been enhanced. The monsters are not only harder to kill, they fight smarter than ever. So, your success in Hard mode will be determined, more than anything else, by your skill at playing the game.