A little bit after treyarch posted the zombie lane picture, a person by the twitter name of Chicod94 sent them a tweet that said "We have arrived at our destination" and treyarch replied "My friend, is has just begun." And the only way to see this tweet is if you click on the first zombie lane tweet, but if you make it full screen then the tweet dissapears. I think this means that we will get zombies info very soon.
It's there for me.
Are you sure the tweets are on ALL, instead of No replies?