I apologize if this is old news but...
I recently visited the cinema in GTA V to see a movie and then the Simian trailer came up and in the trailer you can see the Hunter helicopter clearly up to date and fully functional which was used to make the movie trailer.
I found this on youtube so you may see it as well. Skip to 40 seconds in.
(And yes, dollar sign rims and white walls on a modern BMW, tacky to no end but this was the clearest video I could find without annoying overrated dubstep intros or videos with cool image intros expecting the guy talking to be an actual risk taking hero adventurer only to find out through his voice that it's just another depressing nerd )
Clear view of the Hunter at 1:07
Why hasn't Rockstar released it out though? Considering this has been around since the game's launch.