Samsung has started rolling out One UI 9.0, based on Android 17, to the Galaxy M36. The update appears to have been released first in South Korea.
The firmware carries version M366KKSU7DZJ5 (via Mohammed Khatri). There is no information on the package size at the moment. Samsung is expected to expand the rollout to other regions over the next few days.
One UI 9.0: key changes and features
One UI 9.0 introduces a more customizable Quick Panel and refined user-interface elements. The update also brings improvements to Samsung Notes, Creative Studio, Interpreter, and Document Scan. Other additions include enhanced accessibility tools, stronger protection against suspicious apps, and a dedicated Warranty and Care section for checking device coverage and running diagnostics.
Rollout and how to get it
To check for and install the update, go to Settings > Software update > Check for updates.

