This thread is taken from se7ensins.com forums. The user managed to get a hold of the map list from the Beta of Black Ops 2. Here it is :
"Chinese Supercarrier. Open engagements on the deck, with great close quarter fights through the hull."
"Port of Singapore. Good for close quarters engagements and verticality."
"Hidden drone facility in the heart of the Mynamar jungles. Great long engagements down the center, fun close quarter fights through the facility."
"Los Angeles bullet train station. Good long to medium engagements up and down the bullet train tracks."
"Luxurious super yacht. Frantic, yet controlled close quarters engagements."
"Set in a ruined downtown Los Angeles after an invasion"
"Pakistan nuclear power plant. Battle for control of the nuclear cooling tower and the surrounding facilities."
"Floating resort in the middle of the Indian Ocean. Tight corners and angles throughout."
"Peshawar, Pakistan. Great urban engagements in the flooded streets."
"Fight through this hillside mansion, in the Hollywood Hills. Hectic close quarters engagements."
"Run down section of Panama. Great close quarters engagements and tough chokes to fight over."
"Urban streets of Yemen. Tight alleys and close quarters engagements."
"Wind farm in the steep hills of Yemen. Fight across the different tiers and angles."
"Border town between China and Kyrgyzstan. Classic engagements and destinations to fight over."
On the original thread, these were displayed as, for example "REFERENCE PRESENCE_MP_MELTDOWN. LANG_ENGLISH "Meltdown"" as they were taken straight from the games files, I edited the thread to make it easier to read.
A couple of notes to make is that Cargo, Turbine, Aftermath and Yemen were featured in the Multiplayer Gameplay from Gamescom, as well as Nuketown isn't included in this list, however we know it has been confirmed to be in the game. The original description from the Black Ops Map List was "Small Nuclear testing grounds. Fast-paced action on a small map".
I know it is only a small description for each map, but which are you most interested in playing?