Apple releases iOS 9.0.1 update
According to the release notes, the update contains bug fixes. The note specifically calls out the following:
To install the update on your iOS device, launch the Settings app, then tap General > Software Update. You also can update within iTunes with your device connected to your Mac.
Apple says that more than 50 percent of activated devices are now running iOS 9, so there may be a rush to install the iOS 9.0.1 update. The update is 34.2MB; hopefully it won’t take long to download and install.
If you haven’t upgraded to iOS 9 because you wanted to wait until Apple released a bug fix, this might be the time to upgrade. If you rather wait until Apple releases a major update—iOS 9.1—you might have to wait a little while longer. iOS 9.1 was seeded to developers on September 9 and has features for the upcoming iPad Pro, which is slated for release in November.