It has a new thing at the end: alternate endings.
The measure with "1. 2. 3…" in it is what you play the first time through and for each subsequent time except the last. The final time through, you skip that measure completely and go to the one with the "Final" above it. The difference between the two endings is that when you're going to another verse or chorus, you need to add the words "It was" or "Give me."