It looks like Sylvester Stallone really is going to come back for Rambo V. The sequel was in development back in 2009, and at the time it was called Rambo V: Savage Hunt. It was shut down in 2011. The most recent news regarding Rambo was that a couple of production companies who were developing a TV series were also going to develop the fifth film.
We learned that this time Rambo would be going up against a Mexican cartel. "Stallone, who has also written the screenplay, describes the new Rambo as his version of No Country for Old Men." That should definitely be interesting. Stallone has now confirmed himself that he is getting really for Rambo V. This is what he said in a interview with Vulture,
"I’m getting ready for that. I’m starting to work out. I’m going to be appropriately vicious and all that stuff, but intellectual. A killer with a heart. Smart, yet stupid. Tall, yet short. Broad, but thin. You know what I mean. We’re going to try to cover all the boundaries."
The sequel was originally supposed to be an adaptation of a novel written by James Byron Huggins called Hunter, but it doesn't sound like that's the case anymore. It definitely would have been a very different adventure for Rambom as he would have gone up against a "half-human abomination created by a renegade agency through a series of outlawed genetic experiments."
I enjoy the Rambo franchise, and it will be good to see Stallone come back and go ballistic again.