2 (or more) Metal Gear Solid games in the future?

[crymetyme]

in the second act of MGS4, the part where you reach Naomi, there is a cutscene. In that cutscene, theres a part where Naomi is discussing the effects of the nanobots on the soldiers, and there is a little screen where pictures of these soldiers are shown, and other pictures. at the end of these pictures, there is someone scrolling down a list of metal gear solid games (all of which were released on console) and when it reaches MGS4, there are two more icons below it, that say "coming soon." You only see those tow "coming soon" icons for about a second or two, so you might not notice it.

I know it's probably going to be confusing to understand what i wrote, but other than actually talking to you, i have no better way to explain it.

So what do you guys think? A developer's joke, or could it be truth?