For some the WiFi toggle was added back. I've always had it (through three firmware versions) and I can't explain why. Two other phones bought at the same time on our account did not.
I'm having an issue with notification tones not playing and a android.process.media has stopped warning when I try to change my right tone from the stock list. Weird. May not be related but it just started. Cleared data and rebooted the phone and it still does it and still no tones for notifications. That's a problem for me.