Android Q's latest preview build was released yesterday (June 5, 2019). It has some interesting new aspects, such as a re-brand for Smart Unlock. However, Google has now stopped pushing its OTAs to phones as it has been found to cause bootloops in some cases.
https://www.notebookcheck.net/Android-Q-Beta-4-rollout-on-Pixels-arrested-due-to-bootlooping-issue.423134.0.html