So far, what we know is that Treyarch, the makers of Black Ops haven't taken any direction from Infinity Ward, the makers of the most popular first person shooter games of all time, Modern Warfare 2, and Modern Warfare 1.
Josh Olin, Treyarch's Community Manger had this to say when asked how the storyline in Black Ops, due to release in mid-November.
We’re not there to tell history and we’re not there to make any political stances, it’s strictly there to be an entertaining game. So when you play through the story you’re going to get, it’s pretty awesome, it’s a rollercoaster ride for sure.
Few things about the Multiplayer situation in Black Ops.
Gigantic strides have been made in the case of keeping hackers, cheaters, and general no-good-doers out of the game. A large portion of this step is the use of server side hotfixes, which let Treyarch deploy emergency bug/glitch/updates immediately instead of waiting for the usual round of Xbox Live/Playstation Network to come around, which can sometimes be months apart.
That's it for now, more info. on Black Ops is sure to come!