I know I'm late to the party but its hard to keep your pulse on the 'Net when you are worried about the pulse of a person at the hospital. ;P
Anyways, I couldn't help but comment anyways having seen the fully unlocked character select screen for Brawl about two months ago. I am sure
many of you have come across the screen, and the video it comes from, by way of Kotaku and many other places. All it took was a good look over to know it is a fake. How is it fake? Besides the obvious (character photos such as Young Link, Mewtwo, Ganondorf, Midna, etc. not being of the Brawl render style) but the simple fact that characters that ARE in the game as secret characters are missing. And as anyone can plainly see, there is no more space for anyone else, which leads to my second point being that characters NOT in the game (as of a month or so ago when I last had tabs on the fully unlocked version) as playable characters are there such as Midna, Ridley and Baby Bowser.
There are some characters there that have not been officially announced that ARE correct (I'l let you guys piece that together on your own), but the amount of Photoshop'd unplayable characters makes this an easy throwdown into the fake pile. Just look at the inconsistent art style used in the character pictures if you don't believe me - every single Brawl playable character will be rendered in the same style for the character select screen - there will be no discrepancies on the final product.
Nice try to whoever tried to pass that off as real, but you're not that good. You have been called out on shenanigans!
Anyways it was funny to see Kotaku report it just NOW (today) saying it was true only to have everyone tell them it was false and having to do an update.
As for characters, you are just assuming they are official! ;)
Time will tell.