Yes, I've seen the (probably) legit "Dark Knight Rises" teaser that's supposed to start showing up in front of "Harry Potter" tonight and tomorrow. No, I'm NOT going to post bootleg links on this site.
There's not much to it, honestly, but some impressions after the jump...
At least half of it is clips from the previous films, primarily "Begins."
A good deal of Liam Neeson's "Begins" dialogue used as voiceover; suggesting that the rumors about the loose-ends of that film coming back into play here have merit.
The titles make it EXPLICITLY clear that this is the END of this series.
I don't know that there was a single good "new" shot of Batman or Bruce Wayne, but his voice is heard.
We see Bane, but not well.
A major character appears to have been critically-injured.
Dialogue heavily implies that a significant amount of time has passed since the last one, and that Batman has not been active for a portion of it.
No Catwoman or implications of Catwoman yet.
The video of the teaser is supposed to be officially released on Monday, but will supposedly be in theaters with most prints of "Potter."