There’s a tendency with some phish attempts to overstuff the mail with all manner of nonsense to look more convincing. The mail itself combines a fairly clean design with minimal messaging. As for the panic aspect, the phishers have pinned the hopes of this attack onto the old faithful “Someone is trying to login as you, so you’d better do something about it ASAP” routine.
The mail looks professional enough, and seeks to imitate what would be a fairly typical looking message from Facebook. The ruse is quite simple: The mail senders are relying on the recipient’s sense of panic to respond without thinking about it. Watch out for bogus Facebook phishing messages winging their way to your mailbox.