This is a fan-made trailer for Aliens that has been re-cut and edited in the style of a new blockbuster release. It’s quite good, although it’s hard to go wrong with Aliens footage. It uses the music from the surprisingly good Transformers Dark Bit of the Moon trailer, which is basically a rip off of the famous Inception music – at least they both go DUMDUMDUMDUMDUMDUM DUM in an urgent manner. It’s the new Lux Aeterna.
It’s a bit of a trick though, you can put urgent Inception or Inception style music onto any trailer and it becomes the most immense thing ever, for example: