Registered developers can download the beta version of iOS 11.2.5 from the Apple Developer Center or by air once the appropriate configuration profile has been installed from the Developer Center.
iOS 11.2.5 introduces a new feature that allows Siri to play daily news podcasts when asked about current news. By default, Siri will offer news from The Washington Post but you can also choose to switch to Fox News, CNN or NPR.
The new audio news feature, which seems to have been developed for use with Apple's upcoming HomePod speaker, is invoked when using Hey Siri or when asking Siri about news when using CarPlay or with connected headphones, basically any situation where you are not looking at the screen of an iOS device. If you activate Siri using the side button or the Home button on a device, standard Apple news headlines are provided instead of audio-based news highlights. This new feature is also available on iOS 11.2.2 devices starting this week.
It is not clear what other new features, if any, will be included in the beta version of iOS 11.2.5. We did not discover other notable changes in the first five beta versions of iOS 11.2.5, so this update may focus mainly on bug fixes and security enhancements in addition to the Siri news update.
If that is the case, we may not know the scope of what is in the update until you see a public publication. It is assumed that Apple will launch an iCloud Messages feature that was extracted from the iOS 11 version, but there have been no indications of when we can expect the iCloud Messages to be reintroduced.
Update: The beta 11.2.5 beta 6 update seems to fix an error that allowed a malicious link to freeze the Messages application on iOS devices.