I found all of this in Treyarchs codes so I thought I would share it with you guys since it's pretty interesting and confirms a few things. I'll update if I find anymore stuff.
Also I'm not 100% sure about all this, but it is Treyarchs codes.

The New Perk:

It's going to be called Deadshot Daiquiri. "Deadshot"
Don't know what it does, Comment on your guesses.
Maybe it could make everything a one shot kill or something? Idk.

The New Weapons:

V-R11 "Humangun"
Turns Zombies into Humans.

V-R11 Lazarus
The V-R11 Upgraded.

Scavenger
Explosive Sniper.

Hyena Infra-dead
The Scavenger upgraded.

Semtex Grenade
Sticky Grenade


Maps
All the descriptions for these are from the coding! I didn't make any of it up!!

Zombie Maps

CALL OF THE DEAD:
MENU_ZOMBIE_COAST

A shipwrecked crew of fearless explorers is hopelessly stranded in an abandoned Siberian outpost. Their dream of discovering the true origins of the mysterious Element 115 unravels into a Hellish nightmare..

Other Zombie Maps

Maybe the next zombie map?

Temple:
MENU_ZOMBIE_TEMPLE

Temple of Doom? <-- That is Treyarchs description in the coding.

Multiplayer Maps

Escalation Pack

Stockpile
MPUI_OUTSKIRTS
Fight over the tight interiors and long roads of a rural Soviet town..

Hotel
MPUI_DESC_MAP_HOTEL
Battle to control the rooftop of a swanky Cuban hotel..

Zoo
MPUI_ZOO
Be ready for long-range firefights in this abandoned Soviet zoo..

Convoy
MPUI_GRIDLOCK
Intense combat in the aftermath of a Soviet ambush on American soil..

Other Maps

Silo
MPUI_SILO
Conflict erupts near Soviet missile silos. Lots of close engagements and flank routes..

Area 51
MPUI_AREA51
This map does not exist.. <-- I'm not trolling that was literally in the coding.

Firebase
MPUI_FIREBASE
Rumble in a Firebase..

Golf Course
MPUI_GOLFCOURSE
Keep an eye out for snipers in this cliffside resort..

Salvage
MPUI_SALVA
Two sides struggle for supremecy in a salvage yard..

Snow Mine
MPUI_SNOWMINE
Winter combat in a deserted mine. Great for objective-based game modes..

War Museum
MPUI_WARMUSEUM
Battle for control of the museum. Intense interior firefights..


No info for the rest. I'll update if I find any.

DISCOVERY
MPUI_DISCOVERY

Airbase
MPUI_AIRBASE

Trainwreck
MPUI_TRAINWRECK

Cubatown
MPUI_CUBATOWN

Cargo
MPUI_CARGO

Drive-In
MPUI_DRIVEIN


So what do you guys think of some of this stuff?
I think the Hyena Infra-dead sounds epic.