Meet The New IE, Same As The Old IE

To clarify the situation, I asked Chris Wilson what would happen if IE8 were to encounter a valid, well-formed document with a strict DOCTYPE. My worst fears were realized when he confirmed that the browser would behave exactly as if it were its predecessor.

This is gobsmackingly audacious. Imagine a new version of Word that behaves exactly like the old version of Word unless the document it is processing contains a hidden instruction to unlock any new features. That's what Microsoft is demanding that web developers implement. Unless you explicitly say otherwise, IE8 (and IE9 and IE10, ad infinitum) will behave exactly like IE7.