That is from the Smash Dojo Forums itself about Brawl. It answers so many questions. It has a confirmed Characters and Stages List and FAQs about sonic, online play, controller, wavedashing, and motion sensors.
Please just use this as a resource.
Really all the answers are WE DONT KNOW FOR SURE, BUT THIS IS WHAT SAKURAI SAID so please just wait instead of asking the same questions over and over and causing massive battle royals between everyone.