Earlier reports of feature-film length cutscenes have been denied by the game’s production company. According to Kotaku, Ryan Payton, assistant producer at Kojima Productions, said the following;

I’m surprised nobody has stepped forward to debunk this rumor. There are no 90 minute cutscenes in MGS4. The ending is long, but 90 minutes is a gross exaggeration.

And here I thought gamers liked long endings!

So there you have it. I’m sure the cutscenes will still be phenomenal, but at least you won’t have to change into your sweat pants just to watch them.