Where are the updates?

There Have been Updates, There small, and slightly Insignifigant.

The most recent ones were the pages about The Hammond Creation center and I think something else on main street. 

There small, Its usually just something explaining more on the Map.

They did add an Adition, Where you can see the current Exact number of guests in the park.

The current Belief is that it is Monthly updates, But don't get your hopes up. We're still a while away from the movie, If they released everything now, It'd be useless in terms of advertising/marketting.

Universal has begun marketting the film this month, So, We should see it speed up soon. 

I had a theory that marketing might start either January or March.

Well, Your not wrong. Major marketing should begin in those months.