I don't think that's ever happened before. With Superman Returns, it'll seem stupid but the people will still see a new movie and won't think "What happened to Clark's face?".
But for Spidey, its likely they'll be popping this films out in a nice order. I guess it's not that big of a deal, but it'll certaintly be something new.
And the Batman flicks can't be used as an example, cuz they all sucked. BB does it all over again with Bale, and that's how it's gonna stay.