We recently received an update from the City of Heroes team! They new Content Update Issue 14 is making its debut in the game's open beta session! The biggest change to note is the new Mission Architect game system. This new system allows players to design their own missions, detail the environments those missions take place in, the objectives and enemies in the mission, and even get creative and add their own lore and character dialogue! This new feature will add new "out-of-the-box" type missions for players - and a virtually endless amount of them!
Here's the post from City of Heroes:

Calling all
superheroes and supervillians... City of Heroes Content
Update Issue 14 is officially making its debut via the game's open beta session.
In Issue 14, players will have an opportunity to create and give feedback on one
of the most in-depth player created mission systems in an MMO to date! The
Mission Architect game system is a robust new system that allows players to
literally design their own missions for the game, determining details ranging
from environments, mission objectives and enemies, to the written fiction and
character dialogue. With Mission Architect, players will also be able to share
their creation with the entire City of Heroes community as
everyone's story/mission masterpieces will be available in-game for fellow
gamers to play and rate - and the higher the rating, the more benefits and
rewards players will experience.
City of Heroes Issue 14 was developed by NCsoft NorCal in Mountain View, CA. In addition to the launch of Issue 14, NCsoft will be releasing City of Heroes Architect Edition for both PC and Mac in mid-April, a retail product featuring Mission Architect alongside other content updates.
For more information, please go to the official City of Heroes site at http://www.cityofheroes.com/news/news_archive/issue_14_open_beta_begins.html
Comments