They'll only care for a few weeks.. like every other time facebook has altered something. I'm personally in favor of the new look, and I think a certain degree of change is healthy now and then.
I'd be happier with "a certain degree of change" now and then if it didn't always require a full privacy audit on my part to find whatever new opt-out pain-in-the-ass they've slipped in without telling me. They've proven themselves so untrustworthy in this regard that even the updates that seem like they shouldn't have privacy effects need to be audited; and of course it doesn't matter that a particular update doesn't have a privacy violation, because you still need to run the audit to be sure.
Can you elaborate on this or provide some examples? As far as I've seen, the only time facebook hasn't stuck to precisely to users' privacy settings are straight-up bugs, that have been immediately fixed.