For me, I take screen shots of all About screens after each update, then compare those to what they look like after the next update. In my case, with a (today) 7MB update from AT&T, there was nothing changed on those at all...but two apps that I always remove (NewsStand and FourSquare) were pushed back to me. So something changed, just nothing apparently at the core.
Occam's Razor nearly always applies when troubleshooting technology issues!
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