Summarizing a few points I've read on the interwebs:
- Fairings had parachutes and thrusters, and they successfully directed them to a set point. Doesn't sound like they were "recovered" as in reusable this time, but it's a big step to make it possible in the future.
- The "roomba" still isn't actually in action, so this one will be brought back the "old fashioned" way.
- Falcon Heavy is currently "late summer" and will definitely use two previously-flown side boosters.
- Doesn't sound like this booster will likely re-fly due to the historic significance. Elon suggested they might give it to Cape Canaveral to be displayed (like their one in California).