There have been some reports via Twitter and a few other Apple centric sites this morning about a bug impacting scheduled Do Not Disturb and the rolling of the calendar to 2013. I can report that I’ve seen the bug on my iPad (3rd Generation) but my Scheduled DND turned off as normal on my iPhone 5.
Take a look at this screen capture I made this morning from my iPad. Note the scheduled DND is still enabled even though the time is past the scheduled end time of 08:00. I had to manually turn of Do Not Disturb instead of it disabling itself automatically as it did throughout 2012.
The interesting thing is that I did not see this problem on my iPhone 5. The Do Not Disturb is set up exactly the same way on it as it is on my iPad and it disabled itself as normal this morning. Others have reported this being a problem on their iPhone 4S and 5 so it doesn’t seem to be isolated to just the iPad. In other words, it could be the worst kind of bug: No method to the madness.
I will update this post as I gather more information or if Apple releases any statement regarding this maybe-or-maybe not bug.