Thanks Bongoboy - does that mean that you believe that italian (or any other) versions will be compatible with english ones - meaning I can play with an italian game vs someone on an english one. If that is so then the CD keys can be utilized for sure on any version.
And Nail, I did ask Activision, some 5 days ago, but no answer yet 
For the language problem, i don’t know…if u absolutley don’t want to listen italian voiceovers, then is better u cancel your pre-order. And as i’ve said in PM, u have to hurry, coz the kits are shipping from today.
For the in game menu, i don’t think it will be a problem…u seem to speak italian very well.
For playing italian version VS other language version of course will be possible!! damn, i’ve NEVER saw a multiplayer game whit this limitation. NEVER!!
And i will be the first to not buy that game, if this will be limited to playing only against my countryl!! 
Thanks Ghiacciolo 
Well IF you can play with any version with the italian cd key, then that must mean that if I get an english version from my friend, I will be able to install it with the italian cd key as there are no alterations in the game code apart from the client-side language localization.
All localised versions of the game can play all other versions of the game. You’ll hear the game audio/see the game text in whatever your chosen install language is. However, not all languages will be available on all versions of the game. As soon as we know the exact details, we’ll pass them on.
Well that’s ok because the Italians are sending their keys today so I don’t have time to wait. So I’ll just use a friend’s english version, whenever he gets it and then just uninstall my game, and install his with my key. Provided I don’t get the english version with the italian game, which would be great but is not really what I’m expecting. If I can just use the key on an EN version that’s all I really need
luckily here are no estonian versions cuz it sound odd(i know it my mother language but the ppl who make the text might make it bad and i will start to dislike it)
Ok, for all those wondering, I got the reponse from the italian distributor that the italian version of the game will come with italian language only.
I’ve decided to stick with the preorder and just use an english installation with my key when I get my hands on my friends english version dvd.