Yeah, some of this makes sense with the images that were released--Big Boss, the dog, 'Diamond Dog' logo, what we know about the MGS story post-PW, FOX engine screenshots--so it wouldn't be surprising if some of this is accurate. It'd be nice to focus on a young Snake, but Kojima seems to want to stay away from him since MGS4.
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"When I was a young man, I had liberty, but I did not see it. I had time, but I did not know it."