Just as speculated, Samsung has skipped 3.5 and jumped straight to version One UI 4.0. The new Samsung user interface is based on Android 12 and beta testers are already being recruited to try it out.
One UI 4.0 Beta Program
If you are interested in beta program, you must own a Samsung Galaxy S21, S21+ and S21 Ultra to sign up for the beta program. The program will go live soon. Unfortunately, for now it is only open to users in South Korea.
Note: both SIM-free phones and those bought from carriers can participate.
As at the time of writing, the date for the start of the One UI 4.0 beta program has not been set. How long will it take to go from beta to stable? You never know with these things as it depends on how many issues are uncovered.
But taking the Note 20 series as an example, One UI 3.0 open beta started in late October and the stable update was rolled out in mid-December. One UI 3.0 brought Android 11, so it was a similarly major update (the recent 3.1 was smaller). If you need a refresher, here is Samsung’s update policy – select phones will get 3 OS updates and four year sof security patches.
Signing up for the beta program and news on the progress will go through the Samsung Members app.