There are now projections saying, "Day One" or "10 Minutes Later." Not sure when they were added, but they weren't there first preview.
At Dance at the Gym, Sharks and Jets are lit with blue and red light separately. I don't recall that first preview. And the distinction helps because although the new choreography is fantastic, it doesn't do as good of a job distinguishing the groups (especially since the original was by two different people).
Also, the projections now with out of focus during numbers, presumably when they want to shift attention to the performers on stage.