Here's the changes I can see:
-They moved the flags up and the numbers on the arms down.
-Gotten rid of the piping
-Extended the vertical lines on the side up closer to the armpit
-Unitalicized the font on the numbers and the name bars
-Changed the laces so they don't dangle
-Obviously got rid of the Ugly reebok logo on the bottom front left, the back below the collar, and the left arm (3 spots). And added the adidas logo to the back below collar (1 spot).
-Tweaks to the collar and NHL logo.
Basically when you compare these two jerseys the new ones look cleaner with the removal of piping, removal of the reebok logo in triplicate, the adjustment to the flags and arm numbers, and the adjustment of the laces.
I think they made some nice adjustments and that's really all we were told they were going to do anyway.