As our resident self-proclaimed biggest Metal Gear fan on these forums, I have to say: Yeehaw.
Who wants some spoilers? I won't post any, but I've got a couple doozies. Not all publications got the word on what to be hush about and some places have broken street dates.
Also, the 90 minute cutscene thing originated with EDGE magazine and has been refuted by the Gamepro reviewer. What I'm thinking is that either it's an exaggeration (IE, he didn't count, that's just his way of saying it seemed long) or he's counting closely spaced cutscenes as one (which, if they're close enough is a completely reasonable thing to do).
Edit: MGS3 Secret Theater was awesome.
Thank god for Youtube since I don't have the Subsistence second disc.