How often do you see bonus content get its own launch trailer? Pretty much never, but some would say Call of Duty: Modern Warfare Remastered deserves it. So does Activision.
For the time being you'll only get access to the remaster by purchasing Call of Duty: Infinite Warfare's Legacy, Legacy Pro, and Digital Deluxe editions. If you pre-purchase Infinite Warfare you'll even get access to Modern Warfare's campaign on October 5. This is probably why we've just received the launch trailer, showing how much better many of the original game's sequences look this time around. There are a lot of spoilers in there, so if you've never played Modern Warfare you might want to stay away.
What sequences are you looking forward to seeing in remastered form?