LG has announced its Android 12 upgrade plans for this quarter, but only for three devices. The timescale is likely to apply to handsets sold in South Korea too, not worldwide. By contrast, other LG smartphones will have to make do with Android security patch updates.
https://www.notebookcheck.net/LG-confirms-Android-12-updates-for-three-more-smartphones-this-quarter.612039.0.html