Apple today released the fourth beta of iOS 9.3.2 to developers. We see the update one week after the release of the third beta. iOS 9.3.2 has been in testing since April 6. In this version we see some under the hood bug fixes and improvements. There are no obvious changes that the user will notice.
To download the latest beta developers can go to Settings and update from there. Or this version can be obtained from the Apple Developer Center as well.