Thanks Nina and Ayako!
Video.sina has posted a new video clip that focuses on the filming of the fight sequences. We hear from Keanu Reeves, Chen Hu, Michael Cooney, Chad Stahleski, Yuan Woo-Ping, and Jerry Marinas about how the filming actually occurred.
You can view the video here. There is also an article with text about the clip that is here. The article describes some of what is contained in the video clip.
Update: Thanks to Ayako who has posted a link that also has the video and a bunch of new posters. It is here. Here are a couple of the new posters. You can visit the site to see the rest.