Ain't no iOS / Apple iPhone thread in this community so I guess it must be long here
One of my friend lost a huge chunk of her photos after updating over the air.
As a good practice, always do a backup of your media before attempting any update of software / firmware.
For me, if it ain't broken, don't touch it. At least do it after they have fixed all the bugs
Here's a snippet from one of the app developers on why iOS 8 was released with many apps still incomaptoible ... looks like the issue is with Apple!
Several days ago, we proactively updated the app to be iOS 8 compatible, and submitted the app to Apple for approval (normal procedure). However, because of the volume of apps Apple is reviewing this week, we’ve been told it may take up to 10 days before Apple releases the app in the store.