The producers of Far Cry have released a trailer ahead of E3 so that they could advertise the live stream of their press conference. In the video, it shows some pretty good graphics, but these could be pre-rendered which would give them an advantage over actual in-game footage. It doesn't give much of the story away and contains some NSFW language.
Overall, the upcoming game looks pretty good. If you are a Far Cry fan, then you should watch Ubisoft's press conference. It will start June 4 at 3PM PDT and is available on http://www.youtube.com/ubisoft or http://www.uplay.com. This means 6PM for NY, 11PM for London, and June 5 for Paris, Moscow, Tokyo, and Sydney.
We will do our best to bring you the latest Far Cry information from E3 while we are there covering the show. Let us know what you think of the trailer in the comments!