It's finally here - Q has been released for download and use - albeit only on Pixel-line phones. On the other hand, this Beta 1 form of the OS is mainly meant for development and testing, not daily use. However, it does come with most of the promised and projected new features associated with the next version of Android.
https://www.notebookcheck.net/First-Android-Q-beta-rolls-out-to-Pixel-phones.414494.0.html