I assume that you are talking about Super Smash Bros. 4.
It is possible, but it is not confirmed, because development on super smash bros. 4 has not begun yet. It is highly possible, considering that Nintendo usually adds about 10 new characters to each game in the series, and that they have almost run out of characters to add. Another reason why it is likely that she'll be in the next Super Smash Bros. game is that her popularity in general has risen in recent years, along with Silver the Hedgehog's popularity. She would also be great in terms of gameplay variety (controlling fire sounds pretty awesome!).
So yeah, there is a pretty good chance that she will be in the next game.
Blaze is not a playable character in Super Smash Bros. Brawl, just a trophy.
You can not get Blaze in Super Smash Bros. Brawl.
yes you can get blaze in super smash brows I just looked it up
No, Jack Skellington is not a playable character in Super Smash Bros. Brawl.
Super smash bros Showdown is coming out in 2012.
In 2012 it will be called Super Smash Bros. Showdown.
Bosses cannot be playable characters in Super Smash Brothers Brawl. ~SiferTH
No, Pichu is not a playable character in Super Smash Bros Brawl
Midna is not a playable character in Super Smash Bros Brawl
no.
No. Naruto is not a playable character.
You don't, because the Mii isn't a playable character. The Mii, however, will be a playable character in the next Super Smash Bros. games, Super Smash Bros. for Wii U and Super Smash Bros. for Nintendo 3DS.