What do I do with the new curriculum?

As discussed in the announcement thread and many other places on the forum, the UI is not done. FCC made the decision that once the curriculum itself and the re-architecture of the application was complete, they would push this one big update to get the new material in the hands of campers ASAP. Once the critical bugs (that always pop up with a major push to production) are squashed, you can expect to see incremental changes that enhance the UI. These can be done in a more rolling fashion because they do not interfere with core functionality.