Yes it's a Tmartn video. Don't like him, well to bad.
Side note, this video is racking views, having 'As Seen on Nextgenupdate' is and would be pretty good for us. It's the little things people.
These new modes sound awesome. Now we have a little more information on these modes.
TranZit mode. Yes, Transit with a Z. This is the footage we saw in the first Zombies trailer. This one, is along the campaign/story mode. In this mode, you'll have objectives you'll need to be completing while holding you're own against waves of the undead.
Survival, same old Zombies we've come to know and love. 4vZ. Survive. Plain and simple.
Grief Mode. This is the 4v4vZ mode we are all excited to see. Something to note, Players can NOT kill other players in this mode. So it's basically 8vZ, but the last team standing wins.
New concepts always excite me. Grief mode sounds like fun if you're in the right frame of mind. I'm glad to see they have normal zombies for all the old guys still.
Edit: Gotta be honest, I'm slightly jealous of his trip to Treyarch.