For the second time this week, Apple has released an iOS 10.3.2 beta for registered developers only.
While there do not appear to be any major feature additions, the second release in a week suggests that either the release date is approaching, or there was a major bug found in the last revision on Monday that needed rectification.
Apple notes that SiriKit commands for CarPlay installations should work properly again with this release, and that it has also made fixes to third-party VPN app compatibility.
Registered iOS devices can acquire the beta through the regular upgrade process, or through iTunes. The current build number for the fifth beta is 14F5089a, with the previous revision holding version 14F5086a.