Update: "We are still analyzing the credibility of these statements, but at this time there is no credible intelligence to indicate an active plot against movie theaters within the United States," a US Department of Homeland Security representative said in a statement.
The full content of the email as reported by Variety is below:
We will clearly show it to you at the very time and places "The Interview" be shown, including the premiere, how bitter fate those who seek fun in terror should be doomed to.
Soon all the world will see what an awful movie Sony Pictures Entertainment has made.
The world will be full of fear.
Remember the 11th of September 2001.
We recommend you to keep yourself distant from the places at that time.
(If your house is nearby, you'd better leave.)
Whatever comes in the coming days is called by the greed of Sony Pictures Entertainment.
All the world will denounce the SONY.
While it's unlikely this crappy free-verse poem-threat is something to take seriously in regards to a physical attack on Seth Rogan and James Franco at the premiere, the hackers have threatened to release a set of the files titled "Michael Lynton" after the CEO of Sony Pictures. [Variety]