Google has revealed which companies, and specifically which smartphones, will be supporting Android Q Beta 3. There are a couple of surprising entries in the list of 21 devices and a seemingly glaring omission. Essential, Huawei, Xiaomi, and Sony all have participating products but there is nothing from Samsung at the moment.
https://www.notebookcheck.net/Google-releases-list-of-21-smartphones-that-support-Android-Q-Beta-3-Essential-and-Xiaomi-but-no-Samsung.420280.0.html