Creed Starts in January; What Happend to Rambo?

Sly Stallone has confirmed that not only is the upcoming "Rocky" spin-off film "Creed" happening, they now have a production date.

In a series of tweets  (Yeah, I don't do that), Stallone revealed that filming on the project is aiming to begin filming in January. He goes on to give a brief synopsis: "CREED the new movie with Michael B Jordon who plays APOLLO'S son and boxer who meets with ROCKY ... an amazing relationship"

Now begs the question, what happened to Rambo 5?   Filming was supposed to begin in Louisiana in October or November and there is certainly no movement on that.  Has it been cancelled or rescheduled?  Hopefully the less then expected Expendables 3 box office returns did not kill it.