I didn't say "untested". Updates should be tested, as any piece of software published to market, according to industry standards for software development lifetime cycles.
And Nokia is no different from any other large software company in that sense.

I don't know what is Nokia's "testing ring" but if there is one, me, personally, would like to join it.

I'm mainly talking about the common average consumer, which buys this phone, learns about it's software defects, and waits for a (tested ) update/s for long time, just to find out that the recently released update is merely a infrastructure fix to ease the applying of PR 1.1...