so ign has a new article on the multiplayer
ima give the link below but if ur too click a link and read ima summarize it for you
multiplayer will be 12 player now , they canceled the 16 to have the game run better
the game modes will be as follows
FFA
QUICK MATCH= player who reaches the set kill count will win,ex. first to 30 kills wins
MARATHON= player with most kills at the end of time limit wins
THREE STRIKES= players have only 3 lives
LAST MAN STANDING= players have one live and last man standing wins
ASE FOOTBALL= is like "tag" were player that holds the All Seeing Eye the longest will win

TDM
TEAM REAPER= you can play both QUICK MATCH and MARATHON in teams
SHARED STOCK= were a team shares a number of lives, players can get choose to get a live from the stock


CTF

TEAM OBJECTIVE= each team has an ASE to capture
TEAM ASE CTF= theres one ASE in map and team that captures it the most in a time limit wins


as for wiispeak
you can only talk to 6 people
those 6 players will be chosen by how close they r to you
so you will hear the 6 players that are closest to you
and by this statement it seams you will be able to hear enemies also

the article
http://wii.ign.com/articles/972/972967p1.html

CTF!!!!! FINALLY!!! And multiplayer looks so cool! I'm gonna love this game.

We're no strangers to love
You know the rules and so do I
A full commitment's what I'm thinking of
You wouldn't get this from any other guy
I just wanna tell you how I'm feeling
Gotta make you understand

CHORUS
Never gonna give you up,
Never gonna let you down,
Never gonna run around and desert you,
Never gonna make you cry,
Never gonna say goodbye,
Never gonna tell a lie and hurt you

We've known each other for so long
Your heart's been aching but you're too shy to say it
Inside we both know what's been going on
We know the game and we're gonna play it
And if you ask me how I'm feeling
Don't tell me you're too blind to see

(CHORUS)

CHORUSCHORUS
(Ooh give you up)
(Ooh give you up)
(Ooh) never gonna give, never gonna give
(give you up)
(Ooh) never gonna give, never gonna give
(give you up)

We've known each other for so long
Your heart's been aching but you're too shy to say it
Inside we both know what's been going on
We know the game and we're gonna play it

I just wanna tell you how I'm feeling
Gotta make you understand

(CHORUS)