Among the new fighting arenas are The Legend of Zelda: Twilight Princess' Bridge of Eldin, the Donkey Kong Jungle Beat-inspired Rumble Falls, a stage based on Kid Icarus, and an Animal Crossing town, the background and lighting of which is determined by the Wii's internal clock.
A new gameplay addition is the Footstool Jump technique, allowing players to use other characters as springs to boost their leaps. Also pictured are the assist trophies, which temporarily call characters such as Dr. Wright from the SNES version of SimCity and Knuckle Joe of Kirby fame to the fight.
As for playable characters returning from past Smash Bros. incarnations, the new photos feature Donkey Kong, Yoshi, and both armored and unarmored Samus. Several grabs from a CG cutscene, presumably the game's intro sequence, were also released.
Super Smash Bros. Brawl is slated to release in North America on December 3, 2007. For more media, be sure to check out the main gallery.