I noticed something interesting on the Smash Dojo that nobody else noticed.
When I was right clickling on some images.
I came upon this
http://www.smashbros.com/en_us/images/icon/world_b_18.gif
This is the link to the image for Pit's icon
Now, see the 18 at the end of the number? well look at these.
http://www.smashbros.com/en_us/images/icon/world_b_10.gif -Mario series symbol
http://www.smashbros.com/en_us/images/icon/world_b_09.gif -Zelda Series Symbol
http://www.smashbros.com/en_us/images/icon/world_b_01.gif - Smash Bros Symbol
all the numbers at the end mean what number symbol they are.
This means there is currently a total of 18 different series that may appear in Brawl right now.
So far I detected the order
1.Smash Bros.
2.DK series
3.Fox series
4.Kirby Series
5.F-Zero series
6.Metroid Series
7.Earthbound/Mother series
8.Pokemon Series
9. Zelda Series
10. Mario series
11.Yoshi series
12.Fire Emblem icon
13.???
14.???
15.Animal Crossing icon
16.Wario symbol
17.??? (Possibly Snakes?)
18.Pit's Symbol
Also many members have thought the list is going in Alphabetical Order by Japanese names.
It's currently uncomfirmed if these 2 series will appear again
Aisu Kuraima (Ice Climbers) (Also can be known as Popo)
Gemu ando Uotchi (Game&Watch)