Subtitled 'Ancient Enemies,' the update brings eight new Klingon Episodes starring "the Fek'ihri, the fabled enemy of Kahless, founder of the Klingon Empire" as well as a little peace and love on the Federation side with 'Federation Diplomatic Corps' missions.
There's also a higher level cap plus new 'Mark XI' items, new 'Tier 5' ships and "high-level versions of every Special Task Force mission and Fleet Action." More importantly, you can now play 'Dabo'--the casino game famously played in Quark's Bar.
You can download a 7.36GB demo for Star Trek Online from FileShack.