Take your pick.
Most of the Smash Bros. Dojo daily updates have so far been either minor item reveals or write-ups about characters already shown a year ago. But today's update is more newsworthy -- the official website has commented on how the game will be controlled.
Details on each scheme are still unknown, but Brawl will support four controller setups: Wii Remote (horizontal), Remote & Nunchuk, Classic Controller, and GameCube Controller. Support for the latter was hinted by Masahiro Sakurai at E3 2006, which implied that the Classic was likely to be compatible as well. It was also well known that a Remote-plus-Nunchuk style would be available for those people who don't have the other hardware or simply prefer to use the Wii's standard interface.
The horizontal Remote-only option is completely new. This series has always been played with an analog joystick since its debut on Nintendo 64, so it's not immediately clear how the game might be controlled with a D-pad, digital buttons, and probably some kind of motion control.
In this website post, Sakurai recommends the GameCube controller because of its stronger rumble capability as compared to the Wii Remote. He also hints that there is some surprising way to execute smash attacks and dashes with only the Wii Remote, and that the secret may be revealed in an upcoming update.