They will not, the games life is comming to a close, another game is now being produced to replace this, and just hope they "IW" will give you the heads up on how you will play online, and what type of servers will be available to play on "ranked" or "none ranked" they may even implement some anti hack or reporting system in the next game, as suggested by some forum uses.  But I think it's to late in the day for any major changes to MW3.

But I found away of sorting the issue out, I uninstalled it, "no more hackes" to play against, now playing another game

so why cant mw3 have  ranked servers where decent admins can ban haxors,and therfore provide a better place for normal players to go to?

and in otherwords,

THERE IS ABSOLUTLY NO POINT IN EVER BUYING THIS OR ANY FUTURE COD TITLE ON PC?

COZ,

A) there is NO anti cheat sytem available

B) there is no ban system against haxors

if you read the post from Viitactiizz, twitter, you will see PC hackers cannot be band the same way as consol users, or as easy should I say, so the hackers can play in any game knowing little can be done.  I am talking to our clan members hoping they go back to Cod 4 and have a modded server, new maps new blood.   This is my last £40 going into IW bank ever, what a farse this game is.