UPlay got hacked apparently. The game can be found anywhere on the net now.
http://uk.ign.com/articles/2013/04/09/hackers-obtain-far-cry-3-blood-dragon
The game is supposed to be released on the 1st of May
Lots of gameplay : http://www.youtube.com/results?search_query=far+cry+blood+dragon+gameplay&filters=today&lclk=today