https://wccftech.com/oneui-based-android-pie-gets-second-beta-release-for-the-galaxy-s9/

Earlier this month, Samsung had announced their much-awaited Android Pie beta for the Galaxy S9+ and S9+. The update is based on their new OneUI design language and is available to sideload as well. It is well known in the developer community and otherwise that beta builds are often bug-ridden and a lot of apps don’t function as intended.

Even Google’s initial Android Pie beta for the Pixels had its share of bugs, most of which were fixed over time. Today, Samsung released the second iteration of their Android Pie beta and it fixes a significant amount of bugs that plagued the initial release.