We're likely a couple of months away from the first developer preview build of Android Q, but already we know a fair amount about what to expect from the next major version. Most excitingly, we could be finally getting a system-wide dark mode. We can now say with a greater degree of certainty that Android Q will carry the version number 10, plus we've learned a few more tidbits.
Thanks to a new version of Android Q's System UI APK it received, 9to5Google was able to glean some new details about the upcoming OS release. Since each of the last few versions has been given a new whole number, it's no surprise to see the new demo mode time set as 10:10 (see below). Nothing is set in stone, but that suggests Android Q will indeed follow the pattern and be Android 10.
 expected to see first builds in comming months){kind=link}