Android 13 is in beta testing mode, and it is in its final stage to launch. But currently, It is only available for Google Pixel devices. But very soon, it is also available for non-Google devices, and Galaxy S22 Ultra, Galaxy Z Fold 3 and Galaxy Z Flip 3 are one of them.
Samsung launch own beta program which is difference from Android developer previewand Android beta program. So Samsung is working its beta program and launch for Galaxy Z Flip 3 very soon.
Android 13 based One UI 5.0 is the upcoming skin from Samsung. Samsung is currently working on it, and very soon, the Android beta will be available to download. Galaxy Z Flip 3 is the very first device of it.
Last year, Samsung unveiled this new build on October 20th at the global Unpacked Part 2 launch event. A majority of the Samsung smartphones are running the One UI 3.1 build, and a majority of them are slated to get the new One UI 4 in the coming months. The One UI 4 build is based on Android 12, and the first beta was released on September 13th. Now, One UI 4.1 devices will be upgraded to One UI 5.0.