yes. my Xiaomi Mi4C gets an update every week. sometimes some minor regressions, but they're always fixed the next week.
i certainly prefer that to the typical android software update cycle from most manufacturers/carriers
or a new wall paper in the stock
or a new option on swipe right
They have sold millions of phones , ask them, on how many phones have they given
--- android version update.
similar to what others have mentioned, the place where i purchased it added google apps in a way that prevented regular updates. once i re-flashed and reinstalled google apps, i've gotten updates every week