It has now been confirmed that the next One UI firmware version is One UI 3.1.1. It will release with the upcoming Galaxy Z Fold 3 & Galaxy Z Flip 3 devices. The firmware may bring plenty of new features and changes to the Galaxy devices. We all know, when the new device gets the latest major update, it later passes to the older flagship & mid-range Galaxy devices. It will be the same with the One UI 3.1.1 version. Now, we know when exactly it will release for the flagship Galaxy S21 series.
In the answer to the Galaxy S21 user, the Galaxy S moderator at the South Korean Samsung community has confirmed the launch date of a new version for Galaxy S21. When the user asks about the release date, then the other high-level user answered that the next update will start distributing from August end. Well, you might not believe the answer of any random person, but the answer is confirmed by an official moderator.
You can trust it because the specific moderator only answers users when they get confirmation from the official team or department. Below you can read the accepted answer about the release date of the Galaxy S21.
After Galaxy S21, S21+ & S21 Ultra, the One UI 3.1.1 version may reach the Galaxy S20 & Galaxy Note 20 in September. Samsung will introduce One UI 3.1.1 firmware in the Galaxy Unpacked event on August 11. In the event, the company will introduce Galaxy Z series devices along with Galaxy Watch 4, Watch 4 Classic & Galaxy Buds 2.