I think I can see a slight difference in behaviour between pr1.0 and pr1.2beta which has the same behaviour as pr1.3. A quick flick upwards in 1.3 always shows the quick menu while on 1.0 it just moves the lockscreen a little and then it comes back.

The "hold" time is definitely the same in the three releases. I can still unlock with a quick enough flick of a couple of cm though in all three releases. On Pr1.0 however it is impossible to bring up the quick menu this way. I have to explicitly swipe and hold.