Today we're getting a surprise: Android 11 Developer Preview Four. Previously, Google said there would only be three Android 11 Developer Preview releases, but the company is making a few changes to its Android 11 release schedule, and that includes this unexpected additional developer preview. The next beta release has been moved to June 3rd, where it will be dropped as part of a new Beta Launch Show online event, details for which Google published earlier today. All of the following betas on the original schedule have also been pushed back a month.