Looks like the LA Times probably has the best coverage, to judge from a Washington Post story.  Anyway, here's the text of the threat, from the WP, with a comment at the bottom:

Warning

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.

An official with the Department of Homeland Security told TMZ the threat was not credible, but Sony is not taking chances.

___________________

Meanwhile, TMZ reports that Sony figures the huge hacking was (at least mostly) an inside job.  Lots of IT personnel were laid off recently.