The good news is that Harvard runs a very punctional process. They release all decisions at the same time, on the decision day. No calls until after decisions are released. For R1, they had said that they would try to release decisions at noon on the decision day. On the west coast, I believe mine came in at 8:30am (and boy, was 7-8:30am an hour a half of refreshing my mailbox...), so just a bit before the expected time. Granted, I was waitlisted, but I haven't heard a single account of anyone getting a call before d-day.
For my part, I really appreciated the all-at-once process. Far less stressing over the BW forums, watching calls roll in across the country. But yeah--expect to hear nothing until the decision day itself. Best of luck in keeping yourselves distracted until then.
I'll be right with you, as they've announced there will be movement on the round 1 waitlist with the round 2 decisions. I'm not holding my breath, but I know I'll be up early, eagerly refreshing my mail anyway.