I don't think it was ever called a remake, more like a remastered version. And that HD pretty much means it'll run at HD resolutions out-of-the-box without mods and such, not that it's HD quality.
Okay then, it's just remastered. Whatever. 17 or 18 easy bucks from tens of thousands of gamers around the world donated to the company that shut down Ensemble Studios just because they wanted to. As I said, gamers are easy to please. I'm not a Microsoft hater, I got a 360, but they won't get my money for this. The unneeded shutdown of ES is the one thing about MS I'll never forget.