After launching iOS and iPadOS 13.4 on March 24, with great new features like trackpad and mouse support for iPads and iCloud folder sharing, Apple is advancing to its next minor release.
For some reason, the company has skipped iOS 13.4.1 to 13.4.4 and has gone straight to iOS 13.4.5. That doesn't mean we won't see those minor point releases, just that if we do, we can expect them to be minor bugs or security fixes that Apple would launch directly without external beta testing. We may not see other significant releases beyond 13.4.5: Apple has never gone to a five-point release in the past. After this, it is likely to be in beta testing of iOS and iPadOS 14.
What's new in iOS 13.4.5
What will you find in iOS and iPadOS 13.4.5? We hope this version will fix some minor details and fix some bugs, mainly. It may include support for future hardware like the rumored Apple Tags tracking devices or earbuds.
The Apple release notes just say, "This beta version of iOS 13.4.5 contains bug fixes and enhancements," which is the generic line Apple uses when it doesn't want to reveal details.
How to get the beta version of iOS or iPadOS 13.4.5
Registered iOS developers can go to developer.apple.com/download on the device they want to install the new beta software on. From there, you can download and install a profile.
Make sure the profile is enabled by going to Configurations > general > Profile. Once the profile is installed and your iPhone or iPad is reset, you will receive the beta versions of iOS and iPadOS in the same way that you would receive regular updates: go to Configurations > general > Software update.
Public beta releases typically follow within 24 hours of developer beta releases. Non-developers who want to participate in the beta test can go to beta.apple.com on the device they want to run the beta on. From there, you can download a profile and follow the steps above to activate it and download the latest beta version.
As always, it is not recommended that you run a beta version of iOS or iPadOS on your primary device. Serious problems can occur and you never know when you will have to erase and restore your device.