Well I have tried the UK version of this game and it is alot better then the demo.
It is much more stable(haven't had a single crash yet) and better optimised as well.
The AI has gotten improved as well however there is still problems with it that makes it either blind as a bat or stupid as a brick(take your pick).
Also if you end up in a car driven by the AI prepare to get carsick because those guys drive all over the place and love to run over people(allies and civilians).
But hopefully they will fix this with patches.
But still a good game