Subject "Your Rapid Rewards account has been updated." It has my correct RR#, and it looks like the links in the email are legit, so I can't see anything that makes me think its a phish (except that I didn't make any changes that would prompt the email). All it said was that the account was successfully updated and that I can verify these "changes" by logging into my account. I opened a separate browser window and manually went to southwest.com to check my account and I don't see anything different.
I did change my password just in case.