Facebook is not the only social network doing some redesigning. LinkedIn has made some changes to users’ inboxes on the homepage.
These changes are certainly not as drastic as Facebook’s which have the community in an uproar. I might be wrong, but I don’t expect much of a backlash here. The inbox now only appears on your home page when you have unread messages (though your inbox and read messages will always be available from the left-hand navigation bar).