Can Stallone not let sleeping dogs lie?

I have just been informed that in addition to the upcoming Rocky Balboa movie, Rambo IV is currently in pre-production. When I first heard this, I naturally assumed that this was someone's imagination busily at work. But, I checked on IMDB and sure enough, the movie is in pre-production and a majority of the cast is already set. They have a preemptive release date of 2007, so we will have to wait and see how this turns out. I own the original trilogy, so I am interested to see how it turns out. You can get more info here.