The Rising Storm team has both an interview and a trailer with the folks over at Gamespy. You can find it HERE
The trailer can also be found over on Youtube!
And since people keep asking "What is Tripwire currently doing?"
People are working on a whole bunch of things - coders on fixes/debugging (and performance), artists on new content, design team considering tweaks to gameplay (but that will happen more after we are comfortable with stability). - Alan Wilson (VP)