As expected, a few minutes ago was aired on Jimmy Fallon Show, where he was shown the first gameplay of Battlefield 3 in the console version, on the PS3. The network does not have to wait long and you already have a high-definition video of the brief demonstration I will propose below.

Update: link replaced with the HD version of the movie.

Update 2: added a link to a video that shows the PC and console versions side by side, so you can compare them better.

Battlefield 3 - Console Gameplay | HD version
Battlefield 3 - Console and PC Comparison | HD version