I believe there is a change to the quick launch bar.

Previously, at the Lock Screen, swiping from any direction (top-down, bottom-up, left-right, right-left) will unlock the screen.
In PR1.3, it seems the bottom-up swipe behavior has changed. It no longer unlocks, but pulls up the quick launch bar. I've been forced to change my unlock habit, but it's not too big of a deal.

It also seems you can no longer pull the quick launch bar up in the Home Screen. If I recall correctly, it was possible in PR1.2.

Not sure the case with in-app swiping, haven't tried, only noticed because I've been unable to unlock my screen XD