I don't need to tell you that Battlefield 3 is doing a lot of things Battlefield 2 didn't do. I mean, it was a different market back then. Consoles weren't as big, although they were growing. In this day and age, Battlefield 3 has to come packed with a single-player campaign, in addition to the addictive, varied multiplayer we all expect.
So, EA and DICE released the teaser above to let us know that they'll be releasing another lengthy single-player trailer to show off what gamers will ignore until they get a little bored with multiplayer. Check back on September 16ht, 2011 for the full reveal.