one of the changes that I counter is:
They added Dutch language

Edit:

They also added "Opera Link" (sync links between PC and Mobile devices)

Edit 2:

another change they made is:
if you click on the "title name" (top bar, were mostly the "Settings/Options" are in many apps), it will go to fullscreen (if you have enabled the Full Screen option).
You had to tap somewhere on the website in early releases

Edit 3:

Opera Turbo works!!!!!!

AWESOME SPEED OF BROWSING NOW!