Here's the good-quality version of the "Dark Knight Rises" trailer, with your first tiny glimpses of Bane, flashbacks to "Begins" and Jim Gordon looking pretty beat up.
Incidentally, no - I'm not running the bootlegged "Avengers" thing yet, but I'll say this: While I understand their thinking, Marvel Studios really needs to get off the guitar-riff/tagline/guitar-riff/tagline/guitar-riff/tagline/guitar-riff/KABOOM!/punchline formula for their trailers. It's not a dealbreaker, but c'mon guys! You're selling the first-ever superhero continuity-cross teamup movie! Low angles, slow-motion, orchestral swells, dramatic-nods, y'know? get your shit together...
So... the MAIN speculation based on what we see in this, to my mind, has to go like this:
1.) It's Gordon who get's "broken" by Bane instead of Batman.
2.) By now, Gordon is aware that Bruce Wayne is Batman, and keeping that a secret is why we don't see whether not he's in costume.
3.) The "arc" of the story involves Batman quitting for awhile.
4.) Heavily referencing "Begins" (whereas TDK ignored it almost-entirely) means The League of Shadows are back in some way, and that's probably them chanting at the end. As such, I renew my earlier very-unlikely-but-not-unthinkable assertation that the COOLEST possible thing that could happen in this movie is for revivified Liam Neeson to show up and be the big heavy.