There are 10 levels this year for prestige and 55 is the top limit.
It is better this time around too. When you prestige, you won't lose your progress on guns. So say when you prestige and you unlock a gun you have used before, when you unlock it again at a certain level, you carry on where you left it at the last prestige, which is much better.
Saves having to unlock the gun, then start to unlock all the add ons too.
As for titles and emblems, they are back but so is the awesome emblem editor they had in Blops 1. So you can design your own emblems, you can save up to 3 I think this time too and it is like a mini photoshop this time around, can designs really cool emblems.
Guns are good, yes they all have new names, but to be honest, if say you liked the AK-47, you will find a gun that handles like the AK-47.
You don't really notice the futuristic nature of the game, there are some cool stuff you can use though, like small knifes you put down which shock people when they go near them.
Is a great game. Unlike MW3 which was near enough the same as MW2, this games feels different