First impressions then ... first observation is I cannot play the game on my computer, apparently it is not good enough. (P4 2.8Ghz HT, nVidia GeForce FX 5200, 1GB RAM)
However, I did get some screenshots for you, which you can download HERE.
When you start campaign mode you get this little tutorial thing. You will notice in the multiplayer screen it only has Local servers, no option for connecting to UBI or anything - not certain if this is just me or is by design. You'll see the server setup screen, minimal options are available, and only Coop mode is available - no adver.
I cannot comment on the gamplay because I can't play it, I get about 1 frame every 3 seconds (literally) and the mission begins in a helicopter. That's all I know.