Star Trek Online Season 3: Genesis is coming this December according to a new overview page on the official site. In Season 3, sector space has been overhauled, item sets will be introduced and players will be able to create their own missions. Called "The Foundry", player created missions will enter beta testing when the season begins. Players can create and share their missions with others.
Hop into the Holodeck! In Season Three, you'll be able to replay Episodes you've enjoyed previously. Some will even feature new, Episode-specific rewards! Nearly every mission in Star Trek Online is available for Replay.
There's a lot more in store for players in Season 3 so head to the official site to read more.