Wow, I'm so impressed. Finished the download over night (the 2nd time..) and I love it. Had only 10minutes of testing this morning but I managed to see quite a lot interesting things. Especially the villages look much better than those in Arma 2. The feeling on the island is just great.
At first I did not like the destroyed houses in cities as it somehow restricts you in making your missions being set before everything started (with this beautiful island even a tourist tour mission would be so damn awesome!). However, it looks very immersive, it is perfect for the setting.
Also no issues with fps. I have 60fps, in cities it goes down to something like 45, nothing which bugs me. The issues seem to be caused by 32bit, aren't they? I wonder why so many here are even using 32bit. :p