It doesn't really give away much other than the theme of the map. The framerate is obviously messed due to the capture and the gameplay is supposedly still alpha... but it looks good. There's nothing there that's freaked me out or got me all concerned, we're still on track to beat the marvel that is BFBC2.
Unfortunatly I couldn't view the first video, but excellent gameplay and quality on the second. I can see that DICE has made great progress in Battlefield 3
I absolutely love the whole idea of echoed shouting from the enemy or the team coming from down a corridor or something. Makes everything so much more intense and nerve-wracking.