Robert Pattinson's Edward Cullen squares off against Taylor Lautner's Jacob Black in Twilight Saga: Eclipse. This looks like a follow-up to a previously released photo featuring Pattinson, Lautner, and Kristen Stewart's Bella Swan. ()
I'm not really sure which scene this is supposed to be. The Edward vs. Jacob confrontation set in the school parking lot, which was recently seen in a clip shown at the 2010 MTV Movie Awards, is totally different in terms of ambiance, lighting, and clothing.
In the novels, of course, Jacob is much bigger than Edward. He's 6'5" or something like that. Perhaps even taller by the time Breaking Dawn comes to a close. Obviously, that's not the case in the movie adaptations. But I think that makes Jacob a more believable match for Bella -- and thus more of a threat to Edward.
Also in the Eclipse cast: Bryce Dallas Howard, Kellan Lutz, Xavier Samuel, Dakota Fanning, Peter Facinelli, Nikki Reed, Jackson Rathbone, Ashley Greene, Elizabeth Reaser, Billy Burke, Sarah Clarke, Michael Welch, Kiowa Gordon, Cameron Bright, Daniel Cudmore, Anna Kendrick, and Jodelle Ferland.