Apple on Tuesday released revised versions of iOS 17.4.1 and iPadOS 17.4.1 with an updated build number of 21E237. The updates previously had a build number of 21E236 and was released last week.
The revised updates are available for all iPhones and iPads that are compatible with iOS 17 and iPadOS 17. However, the updates are not yet available over-the-air and can only be installed via the Finder app on macOS and the Apple Devices or iTunes apps on Windows at this time.
Apple has not announced what the differences are in the new builds. However, MacRumors assures us that the new builds do not contain any references to new iPad models.
It is possible that the new version addresses reports on social media about iOS 17.4 and iOS 17.4.1 causing some iPhones to get stuck in a boot loop, but as mentioned previously no release notes have been published.