The overview display is shown all the time u depress the distance button ->· so no change in behaviour for me. If u tap the button, u get a brief pulse of the overview as before.

Nice u can set a route before it gets a GPS fix as u sit in the car setting it up..

What I have noticed for 1st time is it has started to suggest fast routes thru central London rather than M25 to get to Heathrow from bottom of M11! It goes 100yards from Buckingham Palace - mad. And it asks if u want to allow routeing thru Congestion Charge area - despite saying no tollroads in options. Very annoying and brain dead.