I swear some of the animated breakdowns/slow-mo closeups of the glass UI in the WWDC sessions use more blurring or frosting and are therefore more readable than what I'm seeing on my device.

Maybe they've already changed it but not in time for these first public builds? Or maybe they actually dialed it the other direction after the video animations were made? Or maybe these session vids are mostly renders not using the actual OS implementation?

Or maybe it's my imagination.