I'd bet money on getting a little bit of visuals in the teaser trailer.
The reason the TDK teaser had nothing but audio and a logo was, it was released about a month into filming. TDK had an extra trailer or two all said.
This flick, it's been shooting 9 weeks, so I expect some visuals.
There is a rumored description of the dialogue going around, no idea if it's legit... it does have Bane saying he'll break someone though... so... cool if it's legit.