Apparently this Metro: Last Light video appeared for a brief time on GameTrailers, but was quickly taken down. I'm not sure why it was removed, but whatever the reason it did little to stop one enterprising user from grabbing the clip and uploading it to YouTube. Inside we find almost four minutes for gameplay footage, along with a surprisingly solid interview with the developers.
Update: Unfortunately, since posting this story, the clip has been pulled from YouTube. Sad face indeed.
Gametrailers chatted with Huw Beynon, the developer's Head of Senior Communications. While not a producer or designer, he does an excellent job of articulating exactly what Metro: Last Light is about and how it will differentiate itself from other shooters:
Our focus is really on delivering this story, this adventure you go on. What I think we see in a lot of singleplayer campaigns is the level starts, you're given an environment, but fundamentally the gameplay is very similar throughout. You're funnelled through these environments, shoot a wave of enemies as you approach their positions, they're all poised and ready for you. The entire gameplay is really just all around this shooting experience.
Last Light, on the other hand, will feature more "emergent combat experiences" and "broader environments", says Beynon, where having multiple ways to dispatch, avoid and distract your opponents is the norm.
Towards the end of the clip, Beynon mentions that a Wii version is planned -- that's the current model, not the Wii U. I don't think it will be anyone's version of choice, especially considering how amazing it looks, but I'm sure plenty of people will appreciate the option to play it on Nintendo's console. Correction: It's more likely he said "Wii U", going by other previews.