Apple Releases iOS/iPadOS 15.0.1 With Bug Fixes

You can download the software update by heading to Settings > General > Software Update on your iPhone or iPad.

Here are the release notes:

This update includes bug fixes for your iPhone. – Unlock iPhone with Apple Watch may not work on iPhone 13 models – Settings app may incorrectly display an alert that storage is full – Audio meditations could unexpectedly start a workout on Apple Watch for some Fitness+ subscribers

The iPad update fixed the storage error message and audio meditation bugs.