Upgraded to Android Q Beta today
I decided to take the plunge seeing it was Beta 2 and I wanted to see if it cures the odd "pixel is restarting" message I was getting since the Jan 2019 Android Pie update (a few days will tell).
I do love the black OS theme throughout although the notifications menu could do with some shading to show separation of notifications. One of my apps QuickPic is reported as not supported in Android Q and won't retain its permissions and folder views, and my Magisk root manager is not creating a patched boot image file for me to use (although it reports the file as written).
I'm also seeing LastPass' permissions not working properly but I suspect some of this is due to Android Q permissions being a lot more restricted. I'm re-enabling some of these but let's give it to the May update to settle down. Upgrading without wiping can also create some issues.