So I just went to unlock my 4s when this notification popped up with the text in the title above. Underneath the message were two options: later and change now. Is this new to 7.1.1? I've gone long stretches using the same password and just recently changed it, like 3 weeks ago. Weird or what? I wish I had taken a screen shot, but it was a window like the login for iTunes. My iPhone has been exhibiting unusual behavior lately, in that it's been rebooting and audio apps crash sporadically, where previously they hadn't. Perhaps it's related, I don't know. Also, I use a 4 digit passcode and have it set to erase after 10 failed attempts.