With the closure of Google+, the Android Beta team moved their community over to Reddit. So, if you're looking for an official place to discuss the latest beta of Android from Google, be sure to check out the Android Beta subreddit. Since the team released the second beta of Android Q there seems to have been a number of critical issues that they wanted to fix. It was just announced that an OTA update to build number QPP2.190228.023 is available for those who are currently in the Android Beta program.
The first beta of Android Q was released in the first half of last month for the Google Pixel, Pixel XL, Pixel 2, Pixel 2 XL, Pixel 3, and Pixel 3 XL. Thanks to the timeline Google published that week we were preparing for the second beta to be released in early April. It seems as if Google has been on track with its own schedule because the company released Android Q Beta 2 within the first week of this month. That's given the community some time to test it out and report any major issues to Google.
Beta 3 isn't scheduled until the early part of May, but there were some things that the Android Beta team wanted to fix in the meantime. In the new subreddit, it was just announced that a patch to the Android Q Beta 2 is currently rolling out with the build number QPP2.190228.023. We aren't told the specifics of what this update changes, but we are told that it contains bug fixes and improvements in performance and stability (especially those around apps and permissions). The OTA update will be pushed to devices over the next 24 hours but you can manually check by going to Settings > System > Advanced > System updates.