A small update on the Metal Gear Solid movie announced in 2012: Website Den of Geek interviewed Avi Arad, who is producing the movie, and he had this to say about the project:
Metal Gear, believe it or not, after a decade, we are now literally starting to develop the script, the director. It took a long time to close this deal. It’s now done, finished, the vision is in place.
It seems like it will still be a while before the movie is finished, but at least there is some progress.
Avi Arad announcing the movie in 2012
Source: Den of Geek