I think it's just a combination of the inevitable come down from the usual pie-in-the-sky pre-E3 expectations and the general love that many core gamers have for Metroid.
I'll admit I had a little pang of disappointment as soon as I realised it wasn't going to be Metroid but I think it looks great and I'll be surprised if it doesn't end up being a great game. I think there will be plenty of hype for this game by the time the release rolls around. Not to mention that this is commercially a much better option than Metroid.
Plus, this isn't Retro's only game, I'll put money on it.







