Samsung has started rolling out the Android 12 update to entry-level Galaxy smartphones and tablets. The latest affordable phone to get the Android 12 update is the Galaxy A12 Nacho. (since it's available in one country at the moment)
Hopefully the A12 (Mediatek version) will also get the update by next week or 2nd week of June
The update also brings the new security patch to the device.
The Android 12 update for the Galaxy A12 Nacho comes with firmware version A127FXXU5BVE4. It also includes the May 2022 security patch. The update is currently available in Russia, and it could expand to Europe within the next few days.